Clothes really do come back in style every 20 years

https://www.popsci.com/science/clothes-style-20-year-rule/

Clothing trends come and go, but in some cases, they don’t stay away for too long. For decades, both the fashion industry and its devotees have referenced the so-called “20-year-rule,” which suggests society is liable to see certain styles return at semiregular intervals. However, without any hard data to back up the claim, that “rule” has long remained more of a hypothesis.

That’s changing, thanks to recent analysis from mathematicians at Northwestern University. After examining nearly 160 years’ worth of women’s clothing, an interdisciplinary research team confirms that fashion trends frequently resurface every 20-or-so years.

“To our knowledge, this is the first time that someone developed such an extensive and precise database of fashion measures across more than a century,” study lead author Emma Zajdela said in a recent university profile.

Example of how the researchers measured features like hemlines, waistlines and necklines in archival sewing patterns. Credit: Emma Zajdela / Daniel Abrams / Commercial Pattern Archive
Example of how the researchers measured features like hemlines, waistlines and necklines in archival sewing patterns. Credit: Emma Zajdela / Daniel Abrams / Commercial Pattern Archive

To reach their conclusions, researchers first compiled a dataset of about 37,000 garments by combining the University of Rhode Island’s Commercial Pattern Archive with generations of runway collection images dating back to 1869. They then broke down clothing based on specific features including hemline, waistline positioning, and neckline to assess each example in measurable, numerical terms. Finally, they built a new mathematical model to analyze the push-and-pull between novel and more recognizable fashion designs. According to Zajdela and her colleagues, the evidence clearly shows that the fashion industry routinely recycles certain themes and designs around every two decades.

“Historically, the lack of data posed a barrier to explicit quantitative study of this system,” explained Zajdela, adding that they now have “some very interesting results.”

Basically, the fashion industry is constantly fluctuating between originality and tradition. Once a clothing style is too popular, designers begin changing their new apparel just enough to stand out while still remaining desirable to potential wearers.

“Over time, this constant push to be different from the recent past causes styles to swing back and forth. The system intrinsically wants to oscillate, and we see those cycles in the data,” said applied mathematician and study coauthor Daniel Abrams.

The most obvious example of this pattern is the hemline. For more than a century, skirt fashion has swayed between short and long styles. Flapper dresses with short hemlines were all the rage in the 1920s, but gave way to lengthier designs in the 1940s and 50s. By the 1960s, the trend returned back to even shorter options like the miniskirt.

However, despite this mathematical support, the 20-year-rule may not last much longer. Beginning in the 1980s, the short-long skirt dichotomy began breaking down as both options remained popular for wearers.

“In the past, there were two options—short dresses and long dresses. In more recent years, there are more options: really short dresses, floor-length dresses and midi dresses,” said Zajdela. “There is an increase in variance over time and less conformity.”

Only time will tell if the 20-year-rule remains in effect. Until then, it’s probably best to hold on to that old piece of clothing for at least a little bit longer. It’s not only good for your wardrobe—it’s good for the environment.

The post Clothes really do come back in style every 20 years appeared first on Popular Science.

via Popular Science – New Technology, Science News, The Future Now https://www.popsci.com

March 18, 2026 at 09:52AM

Logitech’s radical new mouse ditches clicks for magnets

https://www.pcworld.com/article/3077047/logitechs-radical-new-mouse-ditches-clicks-for-magnets.html

There are a lot of different gaming mice you can use, but all of them have something in common: physical switches. They’re similar to the electrical switches in keyboards and controllers. But there’s a newer option as well, supplied by Logitech—the switches in the Pro X2 Superstrike are magnetic and adjustable. In the latest PCWorld video on YouTube, Will Smith tells us why that’s important.

The Pro X2 Superstrike‘s primary left and right buttons use a magnetic sensor under each button which can measure the distance you press down. There’s no physical contact between the components. In order to simulate a more conventional “click” experience, it uses haptic feedback, just like a phone keyboard or a touchpad on more premium laptops.

Both the actuation point (how fast the click, um, clicks) and the intensity of the feedback are adjustable. Like adjustable actuation keyboards, you can also choose how long it takes the release action to trigger, or even bind separate actions to the release.

So, what’s the point of all this? Incredibly rapid clicks!

If you’re playing a shooter and using a semi-automatic weapon, wherein each click is a separate shot, the “hair trigger” adjustments you can make to the mouse absolutely make a noticeable difference in game. The mouse is also much quieter than a conventional design since it lacks a physical contact with the buttons.

“Are you actually better with this mouse?” asks Adam.

“Look… it’s impossible to tell,” answers Will.

As with all premium gaming equipment, the better you are at the actual game, the more you’ll be able to take advantage of the hardware’s capabilities. But unlike some controversial adjustable actuation keyboard features (like Snap Tap), the rapid firing enabled by the Pro X2 Superstrike isn’t widely regarded as “cheating” (at least for now).

The Pro X2 Superstrike gets all of Logitech’s best gaming mouse capabilities, including wireless charging while playing if you use the compatible PowerPlay 2 pad. It’s also got a frankly insane 44,000 DPI sensor, grip pads in the box, all that jazz. Unfortunately, it relies upon Logitech’s G gaming software to adjust all those variables, and getting it to run on Linux might be a bit of a headache.

This mouse doesn’t come cheap, though. It’s $180 at retail. For more takes on gaming hardware, be sure to subscribe to PCWorld on YouTube and check out our weekly podcast The Full Nerd.

via PCWorld https://www.pcworld.com

March 9, 2026 at 10:53AM

China Made LiDAR Cheap. Now Automakers Are Racing to Put It in Your Next Car

https://www.autoblog.com/news/china-made-lidar-cheap-now-automakers-are-racing-to-put-it-in-your-next-car

Cheaper LiDAR Makes Mass Adoption Possible

A decade ago, LiDAR was mostly limited to experimental autonomous vehicles. Early systems, such as those mounted on Waymo robotaxis, could cost as much as $50,000 per unit. These sensors were large and were often installed on the vehicle’s roof. They also required significant computing power to process the detailed data they produced. At the time, lidar was considered essential for autonomy research but far too expensive for production vehicles.

China changed that equation quickly. According to Automotive News, automakers there began installing LiDAR in production EVs and pushed suppliers to scale manufacturing. Companies such as Hesai and RoboSense increased output and drove prices down dramatically. Some compact units now cost roughly $200. Millions of sensors are produced each year. As a result, a growing share of Chinese EVs now feature LiDAR as part of their advanced driver-assistance systems.

Getty

Why Automakers Are Suddenly Embracing LiDAR

LiDAR prices are falling while vehicle computing power continues to improve. This combination is pushing Western automakers to reconsider the technology. LiDAR stands for light detection and ranging. The system uses laser pulses to create a detailed 3D map of a vehicle’s surroundings. Cameras rely heavily on lighting conditions and visual contrast. LiDAR works reliably in darkness, glare, and poor visibility. It also measures distance with high precision.

Several automakers now see LiDAR as a key step toward more advanced driver assistance and future automation. Rivian plans to introduce LiDAR on its upcoming R2 crossover. Ford Motor Company and General Motors are developing systems designed to support Level 3 automated driving later this decade. Lucid Motors already offers LiDAR as part of its driver-assistance package. Automakers see it as an added layer of redundancy alongside cameras and radar.

Rivian

Tesla’s Skepticism and the Road Ahead

One of the most prominent critics of LiDAR is Elon Musk. His company, Tesla, relies on a camera-based system for its driver-assistance technology. Musk has repeatedly argued that advanced artificial intelligence and cameras are enough to achieve autonomy. In his view, LiDAR adds unnecessary cost and complexity to the system.

Recent developments highlight the uncertainty surrounding autonomy technology. Tesla acknowledged that many vehicles may require upgrades to support future unsupervised, self-driving capability. This could affect customers who already purchased the Full Self-Driving package. The situation reflects the larger industry debate. Some companies continue to pursue camera-focused systems. Others believe that LiDAR’s falling costs and precise environmental mapping will play a major role in building safer, more capable automated vehicles.

Marc Piasecki?Getty Images

via Autoblog https://ift.tt/fbIxE2R

March 7, 2026 at 07:46AM

Seattle Ultrasonics C-200 review: This is the future of kitchen knives

https://www.engadget.com/home/kitchen-tech/seattle-ultrasonics-c-200-review-this-is-the-future-of-kitchen-knives-140000051.html?src=rss

There’s a type of knife tech often seen in science fiction that revolves around vibrating a blade to increase its sharpness. We’ve seen examples of this in franchises like Star Wars (vibroblades), Evangelion (the prog knife), Dune (pulse-swords) and the Marvel universe (vibranium), but what might surprise you is that the underlying science is sound. By vibrating a cutting tool at high frequencies, not only do you reduce friction, you essentially turn the blade into a saw, as tiny oscillations enhance the inherent sharpness of a blade. 

However, up until recently, this tech largely only existed in fiction or for large companies that have the money to utilize the tech on an industrial scale. But that’s changing in a big way for home cooks this year thanks to Seattle Ultrasonics, which is releasing the world’s first ultrasonic chef’s knife: the C-200. After chopping, smashing and cooking with it for about a month, I’m convinced that this is the future of kitchen knives.

Design

From afar, the C-200 looks a lot like a regular 8-inch chef’s knife, but with a slightly more contemporary design. It features a three-layer san mai blade made from Japanese AUS-10 steel with a 13-degree edge angle per side (26 degrees total). However, upon closer inspection, you’ll notice there are some features that seem a bit out of place on a premium knife. 

The first is that the C-200 doesn’t have a full tang, which is the back end of a blade that ideally extends into the handle to provide added strength and durability. This is usually a major no-no, particularly on a $400 knife. However, when you consider that Seattle Ultrasonics needed somewhere to put its vibration tech, there really isn’t any room for it other than inside the knife’s grip. 

You won't be able to feel, but pressing this button allows the C-200's blade to vibrate 30,000 times per second.
You won’t be able to feel it, but pressing this button allows the C-200’s blade to vibrate 30,000 times per second.
Sam Rutherford for Engadget

The knife’s second quirk is that the back of the plastic handle features small indicator lights on either side, which is obviously a bit weird. Furthermore, the entire gray section can be removed to reveal a small 1,100mAh battery with an onboard USB-C port. Frankly, the presence of a battery in a knife is just kind of funky. But hey, the power to vibrate the knife has to come from somewhere because it definitely isn’t being generated by your hands. And while Seattle Ultrasonics doesn’t include a charging adapter or cable in the box, I don’t mind because the company wisely took cues from the larger gadget industry and went with a power spec that’s already widely in use. Honestly, I wish more kitchen tech makers would do the same. 

However, the knife’s biggest oddity is the big orange button on the bottom of its handle. This is what you use to make the blade vibrate, which it does at 33kHz. It’s positioned well so that it’s easy to press regardless of whether you do a traditional pinch grip or if you’re a bit more casual and prefer to hold the knife only using its handle. In the future, I can see this button becoming a touch-sensitive sensor, but for now, it’s simple and effective.

Here's a small selection of knives I own sorted by weight (from top to bottom) compared to the C200: 6-inch Kyocera ceramic knife (97 grams), MAC molybdenum steel chef's knife (110g), Furtif Evercut titanium carbide chef's knife (190g), Seattle Ultrasonics C-200 (328g), Korin carbon steel cleaver (396g).
Here’s a small selection of knives I own sorted by weight (from top to bottom) compared to the C200: 6-inch Kyocera ceramic knife (97 grams), MAC molybdenum steel chef’s knife (110g), Furtif Evercut titanium carbide chef’s knife (190g), Seattle Ultrasonics C-200 (328g), Korin carbon steel cleaver (396g).
Sam Rutherford for Engadget

The main downside to the C-200’s design is that at 328 grams (around 0.75 pounds) it’s heavier and bulkier than a typical knife. When compared to other knives I own, which are made from a wide variety of materials including, ceramic, molybdenum steel, carbon steel and even titanium carbide, it weighs more than everything else aside from my big Chinese cleaver (396 grams). And while it fits nicely in my hand, my wife said it takes a bit more effort for her to wield. It’s not too much to the point where you don’t want to use it. But for quick tasks, sometimes I found myself subconsciously reaching for lighter options like my 6-inch ceramic knife, which weighs just 97 grams. 

How it works

From a user standpoint, putting the C-200 to work couldn’t be simpler. Just press the button and let the knife do its thing. The big difference from how knives like this work in sci-fi is that there’s no audible hum or detectable vibration when it’s on. It’s practically silent (well, most of the time, but more on that later), so you have to trust that it’s on or check the indicator light on the handle. That said, if you still don’t believe anything is happening, you can run the edge of the blade under water or scrape it over some cut citrus, at which point the blade’s vibration will atomize nearby liquid into a fine mist. It’s a cool party trick that also doubles as a way to amp up a cocktail by adding a faint essence of lemon, lime or anything else you can think of.

Pushing the C-200's button is super easy, regardless of what kind of knife grip you prefer.
Pushing the C-200’s button is super easy, regardless of what kind of knife grip you prefer.
Sam Rutherford for Engadget

Inside, the knife relies on PZT-8 piezoelectric ceramic crystals to generate up to 30,000 vibrations per second, which propagate down the blade and make the knife function as if it’s sharper than it actually is. This all sounds rather fantastic, so how does it function in the real world?

In-use

To really put the C-200 through its paces, I cooked over a dozen meals that involved neatly slicing or preparing a wide variety of foods — including Hasselback potatoes, flank steak, pork belly, chives, sushi-grade tuna and all sorts of fruit. 

After prepping four pounds of pork belly with various knives, the C-200 really showed off how much of a difference its vibration tech makes.
After prepping four pounds of pork belly with various knives, the C-200 really showed off how much of a difference its vibration tech makes.
Sam Rutherford for Engadget

In short, the C-200’s effectiveness depends a lot on what you’re chopping. For soft things like strawberries or a piece of cake, I didn’t notice much of a difference. To make things even more difficult, the knife arrived out of the box with an incredibly fine edge — the kind that makes shearing through a sheet of paper child’s play. So even though Seattle Ultrasonics says its knife can reduce cutting effort by up to 50 percent, there’s not much gain to be had when slicing foods that could just as easily be cut by a butter knife. 

However, as I used it more, I found that the C-200 excels at cutting through delicate items like tomatoes, scallions and fish, where using a dull knife often results in bruising the food as you chop. This was most evident when I made poke at home, where Seattle Ultrasonic’s knife delivered cleaner, more precise cuts than anything else I own. 

For me, the C-200's $399 price tag is almost worth it just so I have an an easier time making my one of my all-time favorite dishes (lu rou fan).
For me, the C-200’s $399 price tag is almost worth it just so I have an an easier time making my one of my all-time favorite dishes (lu rou fan).
Sam Rutherford for Engadget

When I whipped up some pico de gallo, I distinctly noticed how neatly the C-200 sliced through the skin of a tomato, instead of initially putting a crease in it before cleanly passing through its interior — which often happens when using dull knives. An additional benefit is that because of the vibrations, I found some foods like garlic didn’t stick to the side of the blade as much. This made it easier to keep track of how much I chopped while simultaneously reducing the mess from things falling willy-nilly during prep. But perhaps the most obvious demonstration of the knife’s prowess was when I diced an onion. When using my other knives or the C-200 without powering it on, I could feel when I tried to cut through thicker, more sturdy layers. But then, at the touch of a button, I was able to slice down with practically no resistance. It’s almost shocking because it feels like magic. 

The C-200 truly excels at cutting denser foods like flank steak. Sadly mine ended up closer to medium than medium rare, but that's not the knife's fault.
The C-200 truly excels at cutting denser foods like flank steak. Sadly mine ended up closer to medium than medium rare, but that’s not the knife’s fault.
Sam Rutherford for Engadget

The C-200 even has the ability to reduce the importance of certain knife techniques. Anyone who’s seen all the posts on r/kitchenconfidential about cutting chives will already know what I’m talking about. As J Kenji Lopez-Alt neatly demonstrated, the ideal way to get crisp, clean slices is to do a subtle forward or back cut instead of simply chopping straight down. But with Seattle Ultrasonics’ knife, I’ve found that it’s so sharp you can get away with almost any motion and still get good results. And if you do it the right way, things are even better. 

Other types of food that makes the C-200 really shine are denser ingredients like meat and potatoes, where you can really feel the added cutting power. Previously, when I had to break down thick cuts of protein, I sometimes wished I owned a serrated electric knife. You know, the kind you break out once a year on Thanksgiving and then it sits and gathers dust for the other 364 days. But the C-200 made that desire a thing of that past, as it quickly and easily worked through flank steak while once again producing neat, uniform slices. 

Sushi-grade tuna is another food that really shows off how the C-200's increased sharpness is better at preserving the delicate texture of the fish.
Sushi-grade tuna is another food that really shows off how the C-200’s increased sharpness is better at preserving the delicate texture of the fish.
Sam Rutherford for Engadget

My favorite application of the C-200 was when I was doing prep for Taiwanese braised pork (aka ???). Despite this being one of my most beloved dishes that I taught myself how to cook because I couldn’t easily find it from local restaurants, I don’t make it very often because it’s a lot of work to cut multiple pounds of pork belly into small lardon-shaped pieces. Here, the knife’s vibrations made it so much easier to cut through all those layers of meat, fat and skin. If there’s any situation where the C-200 makes it 50 percent easier to slice through something, it’s this. 

It might be hard to tell, but I was able to cut chives a little finer and more neatly with the C-200 (left) than with my other knives.
It might be hard to tell, but I was able to cut chives a little finer and more neatly with the C-200 (left) than with my other knives.
Sam Rutherford for Engadget

During my testing, two small issues cropped up. While it was quite rare, the knife would sometimes emit a faint high-pitched whine. When I asked Seattle Ultrasonic’s founder Scott Heimendinger about this behavior, he was rather frank, saying that this can occur when water or moisture accumulates in just the right spots on the blade. Furthermore, he said this only happens on a small number of V1 models, which the company is working to fix in the future. Thankfully, I don’t mind, but if it bothers you, making the noise go away is as easy as wiping down the knife down with a cloth or paper towel. 

The C-200s battery can be easily removed for cleaning and charging.
The C-200s battery can be easily removed for cleaning and charging.
Sam Rutherford for Engadget

The other complication came while I was working through the multiple pounds of pork belly I mentioned earlier. After 10 to 15 minutes of continuous use, the knife beeped and its indicator light turned red. Turns out the knife had overheated, which was something I had not even considered. This led to higher-than-normal temperatures inside the knife’s sealed electronics causing it to shut off. But after just 30 seconds, it returned to form. During later uses, I learned that simply taking my finger off the button between tasks, which happens naturally as you prep anyway, was more than enough to stop that situation from happening ever again.

On the flipside, I was happy to discover that despite lacking a full tang, the C-200 can handle fairly rough tasks, including laying the knife on its side to smash garlic or jamming it into an avocado to remove its pit. That said, I would really recommend against doing the latter, because between its inherent sharpness and its vibration tech, this is the first knife I’ve used that can slice cleanly through an entire avocado with almost no extra effort.

Cleaning and care

The Seattle Ultrasonics C-200 8-inch chef's knife features an IP65 rating for the whole device, though the front half is actually a bit more resistant thanks to an IP67 rating for its button and bolster.
The Seattle Ultrasonics C-200 8-inch chef’s knife features an IP65 rating for the whole device, though the front half is actually a bit more resistant thanks to an IP67 rating for its button and bolster.
Sam Rutherford for Engadget

The last big concern about a knife with built-in electronics is how it handles clean-up. Thankfully, the C-200 features an IP65 rating for dust and water resistance. That means it can withstand rinsing and splashes without issue. And it’s actually even tougher than that, because the front of the knife, including its bolster and button, are rated IP67. This means it can take full submersions in water if need be. However, just because you can, doesn’t mean you should. Good kitchen protocol says you don’t throw knives you care about in the sink and forget them, just like how you wouldn’t put one in the dishwasher either.  

But perhaps the greatest advantage of this tech is that it allows you to go longer between needing to get your knives sharpened, which if you’re like most home cooks, is probably never. To be clear, I haven’t tested this and in some respects I wish I had been able to test out a dull version of the C-200. That said, science dictates that slice for slice, an ultrasonic knife will simply cut better than an equivalent blade without the extra tech. So if you believe in the adage that a dull knife is more dangerous than a sharp one because you need to apply more force to get the same results, this is another bonus for both safety and convenience.

The not-so-optional accessory

Seattle Ultrasonics' wireless charging tile makes it incredibly easy to forget that the C-200 needs to be topped up between uses.
Seattle Ultrasonics’ wireless charging tile makes it incredibly easy to forget that the C-200 needs to be topped up between uses.
Sam Rutherford for Engadget

I fully admit the need to keep a knife charged up is a major annoyance and something I or anyone else probably doesn’t want to do. Thankfully, Seattle Ultrasonics thought of that by including support for wireless charging via the C-200’s magnetic tile and it’s dead simple to use. Just toss it on the charger when you’re not using and it will take care of itself, so you never have to worry about how much of its normal 20-minute runtime it may or may not have left. There are also holes around back so you can easily mount the charger on a wall or shelf. In short, the added convenience the charging tile brings is so valuable that I don’t really consider it an optional accessory. If you’re getting the C-200, you need to buy this too, which sadly means you’re looking at an all-in price of $500 for the bundle instead of just $400 for the knife by itself. 

Wrap-up

As much as I love old-school knives, they'll simply never be as sharp an equivalent blade with this newfound tech.
As much as I love old-school knives, they’ll simply never be as sharp an equivalent blade with this newfound tech.
Sam Rutherford for Engadget

After using the C-200, I don’t think people need to rush out and throw all their old-school knives in the trash. The beauty of an ultrasonic blade like this is that it can handle everything your old cutlery is meant for, but with the touch of a button, it delivers sharpness unlike anything you’ve experienced before. And while it has some quirks, they’re nothing like the kind you typically encounter on first-gen gadgets. Its biggest drawback is that its magnetic charging tile feels like an essential accessory, but it adds extra cost on top of a product that already has a deservedly premium price tag. 

Even though I’m sure knife makers will continue tweaking blade shapes and alloy mixes from now until the end of time, the addition of ultrasonic vibrations to a chef’s knife unlocks a completely new tier of performance. That’s because this technology is additive. All it does is enhance what a blade already does best. And when you look at related gadgets in the maker space, I don’t think it’s a coincidence that there’s a similar revolution that resulted in Adam Savage of Mythbusters fame naming a sonic cutter as one of his favorite things of 2025. When viewed that way, it makes me even more confident that the C-200 is the flagbearer for a new breed of kitchen knives. 

This article originally appeared on Engadget at https://ift.tt/Mow1xnc

via Engadget http://www.engadget.com

February 24, 2026 at 08:08AM

Man accidentally gains control of 7,000 robot vacuums

https://www.popsci.com/technology/robot-vacuum-army/

A software engineer’s earnest effort to steer his new DJI robot vacuum with a video game controller inadvertently granted him a sneak peak into thousands of people’s homes. 

While building his own remote-control app, Sammy Azdoufal reportedly used an AI coding assistant to help reverse-engineer how the robot communicated with DJI’s remote cloud servers. But he soon discovered that the same credentials that allowed him to see and control his own device also provided access to live camera feeds, microphone audio, maps, and status data from nearly 7,000 other vacuums across 24 countries. The backend security bug effectively exposed an army of internet-connected robots that, in the wrong hands, could have turned into surveillance tools, all without their owners ever knowing.

robot vaccum
The DJI Romo. Image: DJI

Luckily, Azdoufal chose not to exploit that. Instead, he shared his findings with The Verge, which quickly contacted DJI to report the flaw. While DJI tells Popular Science the issue has been “resolved,” the dramatic episode underscores warnings from cybersecurity experts who have long-warned that internet-connected robots and other smart home devices present attractive targets for hackers.

As more households adopt home robots, (including newer, more interactive humanoid models) similar vulnerabilities could become harder to detect. AI-powered coding tools, which make it easier for people with less technical knowledge to exploit software flaws, potentially risk amplifying those worries even further. 

I can confirm that @DJIGlobal has finally fixed the HUGE vulnerability they had on their servers.

This vulnerability was discovered by the very skillful @n0tsa , and he reported it to DJI.

It allowed to take remote control (movements, microphone, camera) of over 10 000 robots… pic.twitter.com/j1UunMmNXX

— Gonzague ???? (@gonzague) February 11, 2026

Stumbling into a massive security hole 

The robot in question is the DJI Romo, an autonomous home vacuum that first launched in China last year and is currently expanding to other countries. It retails for around $2,000 and is roughly the size of a large terrier or a small fridge when docked at its base station. Like other robot vacuums, it’s equipped with a range of sensors that help it navigate its surroundings and detect obstacles. Users can schedule and control it via an app, but it is designed to spend most of its time cleaning and mopping autonomously.

In order for the Romo, or really any modern autonomous vacuum, to function it needs to constantly collect visual data from the building it is operating in. It also needs to understand specific details about what makes, say, a kitchen different from a bedroom, so it can distinguish between the two. Some of that sensor data is stored remotely on DJI’s servers rather than on the device itself. For Azdoufal’s DIY controller idea to work, he would need a way for his app to communicate with DJI’s servers and extract a security token that proves he is the owner of the robot.

Rather than just verifying a single token, the servers granted access for a small army of robots, essentially treating him as their respective owner. That slip-up meant Azdoufal could tap into their real-time camera feeds and activate their microphones. He also claims he could compile 2D floor plans of the homes the robots were operating in. A quick look at the robots’ IP addresses also revealed their approximate locations. None of this, Azdoufal insists, amounts to “hacking” on his part. He simply stumbled upon a major security issue.

“DJI identified a vulnerability affecting DJI Home through internal review in late January and initiated remediation immediately,” DJI told Popular Science. “The issue was addressed through two updates, with an initial patch deployed on February 8 and a follow-up update completed on February 10. The fix was deployed automatically, and no user action is required.”

The company went on to say its plans to “continue to implement additional security enhancements” but did not specify what those may entail. 

Related: [The best robot vacuums]

Home owners are grappling with the privacy cost of smart homes 

The DJI security concerns come amid a period of growing unease generally about the surveillance capabilities of smart home technology. Earlier this month, Ring camera owners flooded social media after a controversial advertisement for the company’s pet-finding “search party” feature was interpreted by some as a Trojan horse for broader monitoring. Around the same time, reports that Google was able to retrieve video footage from a Nest Doorbell camera to assist in an abduction investigation (despite earlier indications that the footage had been deleted) reignited debate over how much control consumers truly have over their sensitive data. 

On top of that, lawmakers from both political parties in the US have spent years warning that DJI and other Chinese tech manufacturers pose a unique security threat. The evidence for those claims are murky, it’s nonetheless helped justify the banning of certain Chinese-made products

The irony of many robot vacuums and other smart home devices is that, as a category, they have a long history of questionable security practices, despite the fact that they operate in some of our most private spaces. All signs suggest that the average person will soon welcome more cameras and microphones into their homes, not fewer. As of 2020, market research firm Parks Associates estimates that 54 million U.S. households had at least one smart home device installed. Other surveys show that those who already have one often want more.

The specific types of devices entering homes are also becoming more sophisticated. Though still early, Tesla, Figure, and other companies are racing to build human-like autonomous robots that can live in a home and perform chores. A company called 1X is already retailing one of these humanoids, claiming it can clean dishes and crack walnuts—albeit often with some help from a human. Eventually though, for any of these at-home robot servants to function effectively, they will need unprecedented access to the intimate details of their owners’ homes. For a stalker or hacker, that represents a potential goldmine.

True to his word though, Azdoufal found himself wrapped up in this mess even though all he wanted to do was drive his robot around with a joystick. On that front, mission accomplished.

The post Man accidentally gains control of 7,000 robot vacuums appeared first on Popular Science.

via Popular Science – New Technology, Science News, The Future Now https://www.popsci.com

February 21, 2026 at 08:00AM

Hackers Raise The Alarm About Discord’s Recent Age-Verification Partner

https://kotaku.com/discord-age-verification-hack-persona-2000672570

Last week, Discord users reported prompts to submit personal information to Persona, a third-party age-verification service. As Discord commits to universal age-verification, the new measures have come under intense scrutiny after previous security failures. Now a trio of hacktivists say they’ve successfully breached Persona, getting a closer look at how the company uses submitted biometrics. They say their findings raise alarms beyond leaks.

According to The Rage, Persona’s front-end security left a lot to be desired. Worse, however, were investigative findings that suggested Persona’s surveillance of the users whose data it collected was way more sprawling than originally believed.  

“It was initially meant to be a passive recon investigation,” writes vmfunc, a cybersecurity researcher and one of the hackers, “that quickly turned into a rabbit hole deep dive into how commercial AI and federal government operations work together to violate our privacy every waking second.”

On top of finding it surprisingly easy to access data gathered by Persona, the research showed that faces and biometrics were not just being scanned for age verification, but flagged for suspicious behaviour and bounced off watchlists as well. To some this may not sound like an Orwellian level of intrusion (or to people who don’t worry about their face being deemed ‘suspicious’), until you remember Persona’s full network.

Persona received $150 million in 2021 from the Founders Fund, a long-running tech investor group headed by Peter Thiel. Thiel’s main business, on top of palling around in Jeffery Epstein’s emails and waiting for the antichrist, is Palantir, an intentionally ominously-named data brokering service that is currently peddling user information for ICE-raids. The findings of vmfunc and co’s research doesn’t directly tether Persona and Discord’s operations to Palantir or Thiel, but it wouldn’t be conspiratorial to point out that all this data seems to be funnelling along similar slopes.

Trust but verify

Persona has confirmed the breach, CEO Rick Song corresponding and even thanking the hackers for flagging the security exploit. This has not, however, tempered concerns among those hacktivists about how the user information is ultimately being used.

“Transparently, we are actively working on a couple of potential contracts which would be publicly visible if we move forward,” writes Christie Kim, chief operating officer at Persona, in an email regarding the security breach and speculation around Discord. “However, these engagements are strictly for workforce account security of government employees and do not include ICE or any agency within the Department of Homeland Security.”

After the alarm was initially raised about Persona, Discord claimed its work with the Thiel-backed firm was only temporary, and that it didn’t have new contacts with it moving forward. It also promised user info was being wiped from servers within seven days of being gathered. 

In a statement provided to Kotaku, Discord said the “limited test” had concluded, though what Persona does with the information in that period isn’t clarified. It seems to go much further than verifying which PlayStation you grew up with. Even after the dust settles, it’s unclear if the trust can ever be repaired as an exodus of Discord users have already flooded alternatives like TeamSpeak.

via Kotaku https://kotaku.com/

February 21, 2026 at 11:23AM