Basically, it's just a data entry tool, unless you can carry it with you everywhere.
The bracelet has no name. So far, this is just a concept that the company presented as a promising project for development in the future. Facebook says it may take five to ten years before the technology becomes available to users.
This is a device that converts signals from nerve endings into digital commands. Imagine: the bracelet is on your wrist, you click your finger in space, the device reads the command and turns on the ability to control virtual input. In this case, neither a keyboard nor a mouse is needed.
A similar technology is now used in AR and VR headsets. Cameras in them track spatial gestures and transmit appropriate signals to the device. But Facebook wants to take this "wrist technology" to another level and do without installing cameras - in the case of bracelets, we are talking about processing nerve impulses " encrypted " by the brain and transmitted to the muscles.
One of the problems with bracelets and similar devices is the accuracy of signal processing. According to Chris Harrison, director of the Future Interfaces Group at Carnegie Mellon University's Human-Computer Interaction Laboratory, each person's nerves are slightly different, as are the shapes of our hands and wrists. There is a risk of visual-tactile inconsistency when the user gives a command for one action, and the system reads it out for another.
https://www.youtube.com/watch?v=WmxLiXAo9ko
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