The idea (fta) is to have activation require only the one free hand.
yup that's what the Apple Watch double tap gesture does. On the hand wearing the watch you tap your thumb and index finger together 2 times in quick succession and the watch recognizes that unique motion pattern on your arm and does [something].
alt Hacker News
yup that's what the Apple Watch double tap gesture does. On the hand wearing the watch you tap your thumb and index finger together 2 times in quick succession and the watch recognizes that unique motion pattern on your arm and does [something].