Have you ever wanted to unlock your front door with just your bus pass, a tag, or an old hotel room key? Now you can with the NFC Door Lock, for under $100! It's a super compact Qduino Mini (Arduino-compatible) powered door lock that senses when there is an NFC tag present, unlocks your door usi...By: Qtechknow
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from Instructables: exploring - technology - robots http://ift.tt/1BoYve5
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