Disney is about to have a serious talk with Facebook. Disney Research has had a prototype on gesture detection via wristband electric sensing tech since 2012: https://youtu.be/E4tYpXVTjxA?t=2m8s
Besides it being different technology, the original Myo wristband was also introduced around 2012. The parents were later acquired by CTRL-labs which was then acquired by Meta. So you can be pretty confident that they have the patents.
Although surface electromyography is quite a bit older than that.
