Skip to main content

Gadget lets you control your smartphone, play games by flexing your muscles

Imagine being able to control your smartphone by flexing different muscles in your body. That’s the concept driving a new device called FlexR, which is currently raising funds on Kickstarter.
Recommended Videos

It’s a small gadget that can be attached to any surface muscle and will then pick up on muscle contractions, or flexions, before translating these signals into inputs for your mobile device. An open-source platform with a plethora of possible applications, the smart gadget is kicking things off with an app called RehabFit, in which users get to play games while exercising.

You can think of it a bit like Wii Fit or Xbox Kinect, but without the user having to make large movements like jumping around or waving your arms.

“The cool thing about mixing game components [with] exercise is that it focuses on controlling muscle precisely,” Ricky Ge, FlexR’s creator and a practicing physical therapist, told Digital Trends. “For example, in famous endless run games such as Temple Run, you’ve got to tap or swipe the screen precisely at very specific times. That is the same in our first game theme: Endless Tower. Users have to contract a muscle precisely when the avatar almost hits the obstacles, traps, or flames.”

FlexR’s technology is based on electromyography (EMG), an electrodiagnostic medical technique that’s used for evaluating and recording the electrical activity produced by skeletal muscles.

Li said that he first became interested in the possibilities of EMG while he was a second-year doctor of physical therapy student. During that time, he attended a lecture from a guest therapist who explained that, when she was treating children, she described EMG in storytelling terms to get them more engaged in their treatment.

“Being a gamer myself, I heard that clinical pearl and thought, hey, it’s the 21st century; why are we giving children such lame game content?” Ge said. “I searched everywhere online and didn’t find anything better.” He eventually set about creating FlexR to right that wrong.

If you’re interested in picking up a FlexR unit, you can currently place a pre-order, with prices starting at $99 for a FlexR, RehabFit app, and two packs of reusable electrodes. Shipping is scheduled for April 2017.

Luke Dormehl
I'm a UK-based tech writer covering Cool Tech at Digital Trends. I've also written for Fast Company, Wired, the Guardian…
The best portable power stations
EcoFlow DELTA 2 on table at campsite for quick charging.

Affordable and efficient portable power is a necessity these days, keeping our electronic devices operational while on the go. But there are literally dozens of options to choose from, making it abundantly difficult to decide which mobile charging solution is best for you. We've sorted through countless portable power options and came up with six of the best portable power stations to keep your smartphones, tablets, laptops, and other gadgets functioning while living off the grid.
The best overall: Jackery Explorer 1000

Jackery has been a mainstay in the portable power market for several years, and today, the company continues to set the standard. With three AC outlets, two USB-A, and two USB-C plugs, you'll have plenty of options for keeping your gadgets charged.

Read more
CES 2023: HD Hyundai’s Avikus is an A.I. for autonomous boat and marine navigation
Demonstration of NeuBoat level 2 autonomous navigation system at the Fort Lauderdale International Boat Show

This content was produced in partnership with HD Hyundai.
Autonomous vehicle navigation technology is certainly nothing new and has been in the works for the better part of a decade at this point. But one of the most common forms we see and hear about is the type used to control steering in road-based vehicles. That's not the only place where technology can make a huge difference. Autonomous driving systems can offer incredible benefits to boats and marine vehicles, too, which is precisely why HD Hyundai has unveiled its Avikus AI technology -- for marine and watercraft vehicles.

More recently, HD Hyundai participated in the Fort Lauderdale International Boat Show, to demo its NeuBoat level 2 autonomous navigation system for recreational boats. The name mashes together the words "neuron" and "boat" and is quite fitting since the Avikus' A.I. navigation tech is a core component of the solution, it will handle self-recognition, real-time decisions, and controls when on the water. Of course, there are a lot of things happening behind the scenes with HD Hyundai's autonomous navigation solution, which we'll dive into below -- HD Hyundai will also be introducing more about the tech at CES 2023.

Read more
This AI cloned my voice using just three minutes of audio
acapela group voice cloning ad

There's a scene in Mission Impossible 3 that you might recall. In it, our hero Ethan Hunt (Tom Cruise) tackles the movie's villain, holds him at gunpoint, and forces him to read a bizarre series of sentences aloud.

"The pleasure of Busby's company is what I most enjoy," he reluctantly reads. "He put a tack on Miss Yancy's chair, and she called him a horrible boy. At the end of the month, he was flinging two kittens across the width of the room ..."

Read more