What if your keychain could tell you the temperature, all while staying battery-free? That’s the essence of this innovative keychain ‘NFC_temp’ by [bjorn]. This nifty gadget harnesses energy from an ...
You know NFC. It's that feature on your phone that you insist is really cool and some day you'll totally find a use for it. Well, today is that day. Waiting for your computer to start up when you get ...
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