These are sensors that get power and bidirectional data over the same pin. However, we never liked the name 1-Wire as you really need two wires: one for the power and data and, of course ...
Look out, Frodo — we might have a new "One Ring to rule them all." Token, a new smart ring, promises to give its wearers a chance to make mobile payments, unlock doors, and ditch their passwords ...
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