The mouse doesn't move, but the cursor does. The hand remains still on the table, while the fingers tremble slightly: the black silicone bracelet, Mudra LinkIt senses the micro-movement of your nerves, and before your wrist even bends, the computer has already clicked. This ultra-lightweight neural bracelet (just 36 grams) promises to free us from mice, remote controls, and handcuffs. How? By listening to your nerves. Literally.
Three Surface Nerve Conductance (SNC) sensors capture the electrical signals the brain sends to the fingers: an accelerometer and a gyroscope complete the picture. The result is an interface that translates thought into action, contactless, effortless... and without tendonitis. But does it really work, or is it just another gadget that promises heaven and delivers a bracelet that costs a fortune?
What is Mudra Link and how does it work?
Mudra Link is a neural bracelet created by Wearable Devices Ltd., an Israeli company. And like all bracelets, it's worn on the wrist (Thanks Gianluca, you were the one to say that): inside there are three CNS sensors, an accelerometer, a six-axis gyroscope, and stainless steel electrodes.
The system captures the microelectrical signals that the brain sends to the muscles before the gesture is even visible, translates them into Bluetooth commands, and sends them to the computer. It works with Windows, macOS, Android, iPadOS, and ChromeOS; it has a battery life of two days, a full charge takes 80 minutes, and is waterproof (IP56). Its promise, as I told you, is ambitious: to replace mice, remote controls, and controllers with hand gestures.
CNS Technology: Reading Minds Before Actions
When the brain sends the impulse to click or pinch, the bracelet detects the electrical signal before the muscle even contracts. An algorithm translates that signal into a Bluetooth command: click, scroll, zoom, swipe. It all happens in a few milliseconds. The principle was brought to the laboratory almost ten years ago, and explained in a study published in Nature: capture the intention of movement, not the movement itself. Result: you can control the cursor by keeping your hand still, or by moving it slightly.
The accelerometer and gyroscope are used to recognize the direction and speed of the gesture, while the electrodes guarantee a clear signal even in the presence of sweat or water.
Goodbye, mouse? The daily test
In demo videos, the Mudra Link works perfectly: the presenter moves their hand in the air and the cursor scrolls, clicks, and drags. In real life, things are more complex. The software requires initial calibration: you have to teach the system how your body "thinks" about clicking, double-clicking, and dragging. This takes 10-15 minutes.
Afterward, accuracy is high (about 95%) but not perfect. On the other hand, latency is low: 20-30 ms, imperceptible for office use and browsing. Gaming still requires a mouse: pinpoint precision and the speed of multiple clicks aren't yet at the level of a gaming mouse. The Mudra Link, however, excels at multimedia control: changing slides, raising the volume, pausing a video with a simple flick of the wrist is convenient and effective. Ideal for presentations, remote working, and those with carpal tunnel syndrome.
For those who are really worth it
The Mudra Link isn't for everyone. It costs $199 (about €185) and isn't a complete replacement for a mouse or gamepad. But it's useful for those who: work long hours at the computer and have sore hands or wrists; give presentations and want to change slides without a remote; have motor difficulties that make using a traditional mouse difficult; and want to try a "futuristic" interface without spending thousands of euros.
The bracelet is also a valuable rehabilitation aid: some physical therapists are testing it to teach patients controlled hand movements, receiving immediate feedback on the screen. Furthermore, the absence of touchable surfaces reduces the risk of germ transmission, a significant advantage in medical or shared environments.
Mudra Link, the future is already on your wrist, but it's narrow
Mudra Link works. It's not perfect, but it works. It's the first step toward the mass adoption of interfaces that read your mind before you use it. The next step will be to reduce the price, increase precision, and support more gestures.
Wearable Devices Ltd. is already working on a second generation with more sensors and longer battery life. The dream is an invisible bracelet that understands what you want and does it. For now, we have to settle for a wrist that clicks without clicking. But it's already a technological marvel, at least from the perspective of a Generation Xer like me. Perhaps, in a few years, mice and remote controls will end up in a drawer alongside CDs and grandfather clocks. Better this way: fewer cables, fewer batteries, less pain. More space for your hands. And for ideas.
TL; DR – Mudra Link is a $199 neural wristband that reads nerve signals and transforms subtle gestures into commands for PCs, TVs, and other devices. It uses CNS sensors, weighs 36g, and lasts two days. It won CES 2025. It's not a complete replacement for a mouse or gamepad, but it's useful for those who suffer from clicking pain, give presentations, or want to experience the future. The precision is high but not perfect. The future is on your wrist, but it's still expensive.
To learn more about how neural interfaces are changing the way we interact with technology, read our analyses on human-machine interaction.
