Signal Light

Blue light (like that from our smartphone) tricks the human brain into thinking it's still daytime, even if it's coming from something as small as a screen. So while you're playing around with your new Pixel or Pixel XL after dark, subconscious signals to be awake are preventi ...more

Microsoft has the HoloLens and Google has their money on Magic Leap (as well as their own Tango and Cardboard, among others), but we've heard next to nothing about how Apple plans to enter the virtual/augmented/mixed reality space. A new patent offers some clues. Apple could ...more

The infamous Red Ring of Death plagued the Xbox 360 for years, leading people like me over to the PlayStation 3 console. Now it looks like Sony and its new PlayStation 4 are running into the same problems as Microsoft did. Instead of red, it's blue, and that light could mean ...more

There are plenty of times when it would be nice to be able to give other drivers a piece of your mind, or let them know you're having car trouble so they go around instead of riding your bumper. While there are several gestures that can certainly get the point across, none of ...more

In the past few weeks, you've already learned how to make your bike light up at night with some DIY rim lights and handlebar lights. But how about something a little more functional? Instead of using those tedious hand signals (which drivers don't even understand), spruce up y ...more

A relay is an electrical component that works like a light switch, where it's turned on or off with an electrical signal. By connecting a relay to a Wi-Fi connected microcontroller like an ESP8266, you can build a connected switch that can be controlled from the web browser of ...more

To help keep sleepy binge-watchers from sleep-"watching," Netflix asks if you're still watching after a semi-short period of time. This means that it could be anywhere from 1 to 5 episodes that you slept through, which is better than 2 seasons, I guess—but it doesn't make it a ...more

Eventually, even the most private company has to file its patents and unveil its tightly-held secrets, and Magic Leap is no exception. The US Patent and Trademark Office recently published a treasure trove of Magic Leap patent applications that appear to provide more details ...more

One of the major additions in the Google Pixel 4 is the new Soli chip. It's the miniature radar sensor that powers Motion Sense, a new way to interact with your phone without touching it. There are a few new gestures you'll need to learn to take advantage of Motion Sense, so l ...more

Welcome back, my greenhorn hackers! Sometimes, we don't have a specific target in mind, but rather we are simply looking for vulnerable and easy-to-hack targets anywhere on the planet. Wouldn't be great if we had a search engine like Google that could help us find these targe ...more

The most common Wi-Fi jamming attacks leverage deauthentication and disassociation packets to attack networks. This allows a low-cost ESP8266-based device programmed in Arduino to detect and classify Wi-Fi denial-of-service attacks by lighting a different color LED for each ty ...more

In the case of Apple Watch v. Fitbit, the winner comes down to the judge at hand. Apple currently offers two smartwatches — the Series 5 and the Series 3 — while Fitbit offers three models — the Fitbit Versa 2, Fitbit Ionic, and Fitbit Versa Lite. Whatever your assumptions abo ...more

While flying isn't easy, once an airplane gets into the clouds there isn't a whole lot to worry about—most of the work happens during takeoff and landing. Helicopter pilots, on the other hand, have a lot of dangerous obstacles (like power lines and buildings) to contend with. ...more

At one time or another, we've all enjoyed the visualizations that came stock in Windows Media Player. I remember spending hours listening to my favorite album, putting the graphic equalizer on full screen, and getting lost in the flurry of colors that would dance across the sc ...more

If you've ever been on your way to a party and felt that your outfit just wasn't flashy enough, engineering student 'Rambo' has got just the thing for you. His homemade LED suit lights up and dances to the beat of the music, and can even be controlled via Bluetooth. Video: . T ...more

Looking for a way to make your bike stand out? You could light it up with LED rim lights or turn signals. Or if you're looking for something a little less flashy, you could make your own set of custom wooden handlebars like these by furniture designer David Moore. To actually ...more

Record stealthily, in the dark. This hack is simple and will turn any LED flashlight into an infrared night vision light you can use with any video camera. Infrared light is invisible to the human eye, but it will illuminate any area you are shooting. IR radiation is electrom ...more

Individually addressable LEDs, also commonly called "NeoPixels" after the popular Adafruit product, are a bright and colorful way to get started with basic Python programming. With an inexpensive ESP8266 or ESP32 microcontroller, it's easy to get started programming your own h ...more

Virtual reality headsets are all the rage these days, and among the menagerie of tech companies gunning for the top spot, there's one mysterious startup that is ahead of the game—Magic Leap—and you can tell just by watching their latest demo video of their product in action. V ...more

Smartphones and other Wi-Fi enabled devices send radio signals called probe frames to locate nearby wireless networks, which makes them easy to track by listening for their unique MAC address. To show how this kind of tracking works, we can program a NodeMCU in Arduino to snif ...more

In the latest example of life imitating art, IBM has applied for a patent for a video censoring system that looks a lot like the "Arkangel" child monitoring system from the latest collection of modern sci-fi fables from Black Mirror on Netflix. For those who haven't seen the ...more

Researchers at MIT's Computer Science and Artificial Intelligence Laboratory have created Wi-Fi technology that identifies where you are, which may eliminate the need for passwords. Video: . The system, called Chronos, can determine where a user is with an accuracy of "tens of ...more

We've all been there. Channel surfing lazily whilst reclining on the sofa—then all of a sudden, the remote stops working. Out of frustration, you hold the remote up higher, press the buttons harder, or maybe a even give it a good smack hoping that will fix it. Right around thi ...more

The mighty Arduino microcontroller can be used to show children how robots work, it can be used to hack into hotel rooms, or it can be used to let you know when you've got a new job opportunity! Mikerb0t was tired of being glued to his computer all day long waiting for new jo ...more

Publicly, things have been pretty quiet over at Meta, the augmented reality headset and software startup based in Silicon Valley. But that doesn't mean that the company doesn't have a few strong opinions about the state of AR in 2018. In a recent TED talk, one of the company' ...more

Microcontrollers like ESP8266-based boards have built-in Wi-Fi, and that's really cool, but what's even cooler is that certain pro models of the D1 Mini also have a port where you can connect a directional antenna. This can give you exceptional range, but if you were to just p ...more

Apple has four iPhone models for the remaining months of 2020, but the most impressive ones are the iPhone 12 Pro and iPhone 12 Pro Max. While the iPhone 12 and iPhone 12 mini are great smartphones, the "Pro" models offer more advanced features, especially for photographers an ...more

The recent Oculus conference in California revealed just a bit more about Facebook's secretive plans to compete in the augmented reality space with its own wearable devices. But a new report has revealed that the company is thinking even further into the future of AR. Althoug ...more

On Sunday, Microsoft did what everyone expected the company to do by unveiling the long awaited HoloLens 2. Its main competitor in the AR headset space, Magic Leap, responded with a flurry of announcements, including a new partnership with South Korea's SK Telecom and a new a ...more

Smartphones are still "phones," which means communicating with others is usually a primary use. Ranging from a simple "hi" to a more personal conversation and even sharing passwords, our messages should remain private so that only the intended recipient sees their content. Whi ...more

Scientists know that bacteria create their own energy, get nutrients to run their cellular processes, and multiply. But, bacteria haven't been shown to respond to external mechanical stimulation or signals in a way that's similar to how our bodies respond to touch, until now. ...more

There's a common saying that separates cooks from bakers: baking is a science, while cooking is an art. When baking, one little misstep can alter the texture, taste, and consistency of any recipe. Yet it doesn't have to be a scary science—forget your not-so-happy high school ...more

Apple has implemented a new sensor on the rear camera of its fourth-generation iPad Pro, and it's pretty exciting. It's called the LiDAR Scanner, a scanning "light-detection and ranging" sensor, and you may very well be acquainted with it if you follow any driverless car news. ...more

Silence spreads over these mountains like nothing I've ever felt. If I didn't have Moby blasting in my earphones, there'd probably be no other sounds around. Well, except for someone, Phil probably, murmuring in a nearby tent just low enough to make his words indiscernible. W ...more

In 2018, Motorola is no longer the same brand that introduced the world to the Motorola Droid. The once iconic company is now part of the "Others" group, scrambling for fifth place. The newly-announced Moto Z3 perfectly embodies their current state with competitive specs ... i ...more

Just when you thought Google Glass was dead, it turns out there may be a second life for the often ridiculed device that won't relegate it to the staid confines of factories and repair jobs. In a patent application surfaced last week by Patently Apple, we now see that Google ...more

Bioluminescence — the ability of an organism to produce and emit light — is nature's light show. Plants, insects, fish, and bacteria do it, and scientists understand how. Until now, though, we didn't know how fungi glow. Now, thanks to research led by Zinaida Kaskova in the I ...more

You're minding your business when your Apple Watch taps you. To your surprise, the watch claims your heart rate dipped abnormally low. The news might come as a shock — especially if you have no history of a heart condition — but before you panic, you should take the time to fu ...more

Nowadays, our phones are capable of just more than 30 fps video. Phones like the Galaxy S10 can shoot 4K at 60 fps, even on the front camera. Slow motion functionality has recently started to appear on more and more devices — but as you may have noticed, the quality of the fea ...more

Researchers have developed a new method that harnesses the power of augmented reality to detect a patient's heart rate using a Microsoft HoloLens and computer vision. Developed by Dr. Christophe Hurter, a professor at French Civil Aviation University, and Microsoft researcher ...more

One of the big hurdles when equipping vehicles with sensors for autonomous driving is the cost. For example, the Light Detection and Ranging (LiDAR) sensors that power many versions of self-driving car technology are pricey, currently ranging from around several thousand dolla ...more

Glow sticks, a popular favor at parties and outdoor events, and a must-have on Halloween, can be traced back to the United States Navy in the mid-1960s. The military desired improved visibility during night operations, and glow sticks, with their small-size portability and lac ...more

I've had this idea in my head for almost a year now. I knew what I wanted to do, but wasn't sure if it would work. After a long time of armchair-engineering, I decided that the best way to test my idea was with a soldering iron and a screwdriver. Video: . Impressive? :) Guess ...more

Everybody loves burritos. E-V-E-R-Y-B-O-D-Y. There's even this image taken by NASA of an X-Ray nebula that exists 150 light years away. NASA says the display in the image is caused by a young and powerful pulsar and that the finger-like structures are caused by "energizing k ...more

Getting pulled over sucks, even when you're in a normal car. Just imagine how these teenagers felt when they were pulled over for driving their wooden car without a license! They also got a citation for not having a speedometer or side indicator lights, but if that's all that' ...more

Android comprises an entire ecosystem of apps, games, functions, and features, so it would only make sense that it has its own lexicon. Words, phrases, and acronyms that didn't exist ten years ago are now used in an off-the-cuff style by developers and support technicians acro ...more

The year 2019 was filled with all the normal peaks and valleys of the tech business cycle, but this year was particularly important in a space as relatively young as the augmented reality industry. What once seemed like a vast fertile bed of mobile AR apps, powered by Apple's ...more

Mystery is a tricky thing. Used correctly, it can give onlookers the impression that wondrous and perhaps valuable things are afoot. However, once the veil of suspension of disbelief is removed in any significant way, that same mystery can quickly turn into not just skepticism ...more

It finally happened! In a world of "go big or go home," Magic Leap has finally done something other than tease us with vague promises and rendered video concepts. Although, other than actually showing us what the developer's kit will look like, it seems little more than a slig ...more

On April 7, 2017, residents in Dallas, Texas, woke to the sound of emergency sirens blaring all over the city. No one could shut them off, and after repeated efforts to contain the situation, the city had to shut down the entire system. While the media reported a sophisticated ...more

Alongside its official unveiling of the lower-cost Pixel 3a smartphone at Google I/O, Google took the opportunity to extend its early preview of AR walking navigation in Google Maps to all Pixel devices. After introducing the capability at last year's Google I/O Google began ...more

I noticed the neon yellow sign at the new location of Pho Bar in Chinatown right away. The sweeping cursive yellow letters spell out "Crazy Rich Broth"; the same phrase printed on the back of servers' shirts. It's the kind of minimalist but colorful design feature that is espe ...more

For the uninitiated, it can be difficult to buy that special hacker in your life a perfect holiday gift. That's why we've taken out the guesswork and curated a list of the top 20 most popular items our readers are buying. Whether you're buying a gift for a friend or have been ...more

When you can't reach your iPhone or don't have it on you, how do you get help from emergency services? Unless you have one of those life-alert mobile triggers, someone nearby, or some amazing telepathy skills, hope might be the only answer — unless you wear an Apple Watch, tha ...more

TouchWiz might not be the Android skin of choice for hardcore aficionados, but the Galaxy's OS still has a ton of great features up its sleeve that help provide one of the most enjoyable smartphone experiences out there. Many of these are relatively hidden and overlooked featu ...more

In the years leading up to the release of the Apple Watch, we were frequently teased with concept designs of what Apple's smartwatch might look like. Of course, many of those outlandish designs were off the mark, but the attention to the idea itself hinted that the public was ...more

During his opening address on April 18 at F8, Facebook's developer conference, CEO Mark Zuckerberg launched the company's augmented reality platform centered on artificial intelligence-powered cameras. The new AR platform will allow developers to display information, add digi ...more

Anyone who is familiar with Linux knows that to use your OS to the max, you will need to use the terminal every now and then. Whether it is to install a package or update the system or even delete a file. However, this "tool" is now on your Android phone and can easily access ...more

You may remember string art from your elementary school days. If so, it probably makes you think of the 2D geometrical designs that took every ounce of patience you had as a kid. Or those laborious curve stitch drawings, which string art was actually birthed from. But thanks t ...more

Wish your home wireless network was faster? You can always buy a signal booster, but if you'd rather not spend the money, here are a few tips and tricks to speed up your wireless connection, including how to make a homemade signal booster with things you probably already have ...more