The EMG wrist band is the most exciting part of this release, IMO. That strikes me as a great solve that pushes into software a lot of hard problems that were solved with hardware previously.
The Vision Pro uses optical sensors for hand tracking, so if your hands aren't visible to the device it obviously can't track them. Electromyography solves that problem, and I could imagine Apple integrating some variant of this in a future Apple Watch, and just falling back to optical sensors if you don't own one.
Yeah it is surprising because it seems like a relatively obvious solution. The Watch doesn't use electromyography though [1], it looks like it currently uses "the accelerometer, gyroscope, and optical heart sensor with a new machine learning algorithm." I wonder how accurate that is compared to the EMG solution Meta is using.
