Meta researchers are working on a cutting-edge wristband that lets users control computers with simple hand gestures—like moving a cursor, opening apps, or even “writing” messages in the air as if using an invisible pen.
At the core of this technology is surface electromyography (sEMG), a method that reads the tiny electrical signals generated by muscle activity. According to a study published in Nature, the wristband can interpret what someone intends to do—even before they physically move—by analyzing these signals.
The main goal of the device is to offer a non-invasive, intuitive way for people with motor disabilities to interact with digital devices. Meta is partnering with Carnegie Mellon University to test the wristband on individuals with spinal cord injuries. Remarkably, even those with full hand paralysis still produce faint muscle activity that the device can pick up, enabling them to control a computer.
This approach offers a less invasive alternative to brain implants like Elon Musk’s Neuralink. While EEG headsets are another non-invasive option, their weak signal strength limits performance. In contrast, Meta’s wristband uses more precise sEMG signals and doesn’t require surgery, making it a promising and practical solution for assistive technology and beyond.
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