This disclosure describes techniques for replying to a message without requiring a user to physically interact with a device. The techniques of this disclosure utilize machine learning and radar-based sensing. Potential replies to incoming messages are provided as suggestions. A gesture made by the user to select one of the replies is recognized using radar-sensing, and the reply mapped to the recognized gesture is sent.
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Feuz, Sandro and Millius, Sebastian, "Radar-sensed reply gestures for messaging", Technical Disclosure Commons, (October 26, 2018)