Something iOS/Android developers might play with, is Google's recent TensorFlow/MediaPipe optical hand pose example: https://ai.googleblog.com/2019/08/on-device

Something iOS/Android developers might play with, is Google's recent TensorFlow/MediaPipe optical hand pose example: https://ai.googleblog.com/2019/08/on-device-real-time-hand-tracking-with.html https://ai.googleblog.com/2019/08/on-device-real-time-hand-t... https://github.com/google/mediapipe/blob/master/mediapipe/docs/hand_tracking_mobile_gpu.md https://github.com/google/mediapipe/blob/master/mediapipe/do... But real-world performance can be poor: https://www.youtube.com/watch?v=ZwgjgT9hu6A https://www.youtube.com/watch?v=ZwgjgT9hu6A The hand pose example doesn't support Linux at present.