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Meta researchers are developing a wristband <\/a>that lets people control a computer using hand gestures. This includes moving a cursor, opening apps, and sending messages by writing in the air as if using a pencil.\u00a0<\/p>\n Meta\u2019s wristband employs a technique called surface electromyography (sEMG)<\/a>, which detects electrical signals generated by muscle activity to interpret user movements, as explained in a research paper published in the journal Nature. These signals can sense a person\u2019s intended actions, even before they do them.<\/p>\n The goal of this wristband is to provide less invasive tools to interact with computers for people with motor disabilities.\u00a0<\/p>\n The company is collaborating with Carnegie Mellon<\/a> to test the wristband with people who have spinal cord injuries, enabling them to use computers even if they are unable to fully use their arms or hands. Douglas Weber, a professor in the Department of Mechanical Engineering and the Neuroscience Institute, noted that even people with complete hand paralysis still exhibit some muscle activity. As a result, the device is able to interpret their intended actions.<\/p>\n The wristband is a simpler alternative to other projects, such as Elon Musk\u2019s Neuralink,<\/a> which aims to implant brain chips in individuals with severe paralysis. Other non-invasive approaches include headsets that utilize electroencephalogram (EEG) signals; however, these have limitations due to the weak signals they produce.\u00a0<\/p>\n Meanwhile, Meta\u2019s wristband could be used immediately without surgical intervention, and its use of sEMG signals means it operates at a higher frequency than EEG.<\/p>\n<\/div>\n