MIT’s New AI Can Sense Your Movements Through Walls Using Radio Signals

Jason Dorfman, MIT CSAIL
Jason Dorfman, MIT CSAIL

New artificial intelligence technology developed at MIT can see through walls, and it knows what you’re doing.

RF-Pose, created by researchers at the Computer Science and Artificial Intelligence Laboratory (CSAIL), uses wireless signals to estimate a person’s pose through a wall. It can only come up with a 2D stick figure of your movements, but it can nonetheless see your actions.

The system, described in a new paper [PDF], uses a neural network to piece together radio signals bouncing off the human body. It takes advantage of the fact that the body reflects radio frequency signals in the Wi-Fi range. These Wi-Fi signals can move through walls, but not through people.

Using data from low-power radio signals—1000 times lower than the power your home Wi-Fi router puts out—this algorithm can generate a relatively accurate picture of what the person behind the wall is doing by piecing together the signals reflected by the moving body.

The system can recognize movement in poor lighting and identify multiple different individuals in a scene. Though the technology is still in development, it’s not hard to imagine that the military might use it in surveillance, but the researchers also suggest that it may be useful for video game design and search-and-rescue missions. It might also help doctors monitor and analyze the movements of patients with disorders like Parkinson’s disease and multiple sclerosis.

This is just the latest in a series of projects using radio signals to mimic X-ray vision. CSAIL has been working on similar technology using Wi-Fi signals for several years, creating algorithms to recognize human forms and see motion through obstructions. In the future, they hope to expand the system to be able to recognize movement with 3D images rather than the current 2D stick figures.

Your Smart TV Is Vulnerable to Hackers, According to the FBI

Ahmet Yarali / iStock via Getty Images
Ahmet Yarali / iStock via Getty Images

By this point, many of us have had the experience of mentioning a product or service out loud during a conversation, only to have an ad for that very thing pop up on a smart device mere moments later. And, although you may have gotten used to the idea of your gadgets keeping tabs on you, you might not realize that your new smart TV’s monitoring capabilities make it extra vulnerable to hackers.

KATV reports that the Portland, Oregon branch of the FBI released guidelines last week as part of its “Tech Tuesday” initiative to warn people about the risk of hackers gaining access to unsecured televisions through the routers. Because smart TVs likely have microphones and even cameras, successful hackers could do anything from petty mischief to serious stalking.

“At the low end of the risk spectrum, they can change channels, play with the volume, and show your kids inappropriate videos,” the FBI says. “In a worst-case scenario, they can turn on your bedroom TV’s camera and microphone and silently cyberstalk you.”

Before you head back to Best Buy, brandishing your receipt and begging for a refund, there are a number of safety precautions you can take to make yourself less of an easy target for cyberattacks.

The first step is knowing exactly what features your TV has, and understanding how to control them—the FBI recommends doing an internet search with the model number and the words microphone, camera, and privacy.

After that, you should delve right into those security settings. Disable the collection of personal information if you can, and learn how to limit microphone and camera access. If you don’t see an option to shut off the camera, black tape over it does the trick.

And, even if it’s not the most riveting reading material, it’s worth perusing the fine print on your device and streaming services to find out what data they collect, where they store it, and how they use it.

Check out all of the tips here, and then see what other everyday objects might be susceptible to hackers.

[h/t KATV]

Hotel in Japan Is Offering Rooms for $1 Per Night—If You Agree to Livestream Your Stay

DragonImages/iStock via Getty Images
DragonImages/iStock via Getty Images

Many people are happy to document their vacations online without getting paid to do it. Now, as The Washington Post reports, exhibitionists who can't resist low prices are now eligible to book a hotel room in Fukuoka, Japan for just $1 a night. In return, they must agree to livestream their experience.

Tetsuya Inoue, the manager of Asahi Ryokan in Fukuoka, got the idea for the marketing stunt after one of his guests broadcast his stay voluntarily. Inoue figured that if people are already comfortable sharing their private moments in the hotel with the world, he might as well use that to his advantage.

The "One Dollar Hotel" promotion is a way for Inoue to bring attention to the 30-year-old guesthouse, which is owned by his grandmother. For $1—a fee that covers lodging, taxes, and tips—customers have access to a room that normally costs $27 a night. As guests eat, sleep, and get ready for the day, a camera installed in the room livestreams their every move to the hotel's YouTube channel. The only place where they have privacy is in the bathroom. Signs in the room warn guests not to engage in any "lewd acts" and to keep passports and credit cards out of the camera's field of view.

In addition to generating publicity for Asahi Ryokan, Inoue hopes that his YouTube videos will eventually become popular enough to monetize. Five guests have agreed to the deal so far, and after launching in October, the One Dollar Hotel YouTube channel already has close to 15,000 subscribers.

[h/t The Washington Post]

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