Google's latest smart displays come with ultrasound sensing, a neat tech that uses ultrasonic waves to measure distance to nearby objects and adapt the UI depending on how near of far you are. Timers, weather reports, media controls, and other elements grow larger when you step away, to make it easier for you to spot them at a distance, then return to their regular size when you come close. This same technology appears to be at the heart of a new feature Google is working on, which proactively triggers Assistant the moment you come near without you having to say "Hey Google" first.
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