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Patent shows how Apple Watch could use heart-rate sensors to identify owner
Unlikely as it sounds, a future Apple Watch may be able to identify its owner using nothing more than the heart-rate sensors. In principle, this could allow it to eliminate the need for a PIN (or verification via iPhone unlock) when you put it on in the morning.The possibility is described in an Apple patent application published today, in which Apple talks of combining a number of different characteristics.
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