Apple's newest patent turns your AirPods into an EEG device that also reads muscle movement, eye movement, and heart rate. Neuralink has performed four human brain implants. Apple has hundreds of millions of AirPods in active use. Steven Hotelling is on the inventor list for patent US20230225659A1. He's the engineer who productized multi-touch for the original iPhone. Apple puts Hotelling on things it plans to ship. The design packs 17 electrodes around a single ear tip. Ear-EEG has existed…