As [Norbert Zare] demonstrates in his latest project, you can actually achieve some fairly impressive gesture control on your computer using a $10 USD PAJ7620U2 sensor.

New sensor enables hands-free login, gesture control, and wellness tracking with no extra development needed. Get special access to three exclusive "Top 10 Stocks" power lists today, updated daily.

These allow anyone to control their watch with gestures like a pinch, double pinch (same as double tap), clench, and double clench. How to use double tap on any Apple Watch Option 1 – quick actions ...