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A comment on WISP: Battery-free computer that can be reprogrammed wirelessly. Parent comment

Re:WISP: Battery-free computer that can be reprogrammed wire... by yuubi on Sunday April 24, 2016 @03:11PM (#11560902)
The lock-powered-by-key exists: http://www.cyberlock.com/access-control/cyberkey-smart-keys . The power and signaling go through metal contacts rather than wirelessly.
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