Apple recently spent $2B to bring subvocalization inference to iPhones, from the inventor of FaceID and Kinect, https://www.newsweek.com/apples-2b-ai-acquisitio

Apple recently spent $2B to bring subvocalization inference to iPhones, from the inventor of FaceID and Kinect, https://www.newsweek.com/apples-2b-ai-acquisition-could-have-siri-read-facial-cues-and-silent-speech-11472667 https://www.newsweek.com/apples-2b-ai-acquisition-could-have... > users [could] interact with Siri and future Apple devices without speaking out loud.. AI systems capable of interpreting facial expressions and subtle muscle movements to understand so-called “silent speech.”