NFC, or near-field communications, is a hardware feature that has been built into most Android phones for the last four years. It’s essentially a low-power data connection that can be used to initiate a quick command by bringing your device within range of a compatible receiver, be it tap-and-pay with Google Wallet, a file transfer via Android Beam, or a Tasker profile triggered by a specific NFC tag.
That last example has quite a few practical implementations. NFC tags can be purchased for less than a dollar each, and when combined with an automation app, can trigger a series of events on… more
Sig Nordal 