5 clever (and one creepy) uses for NFC technology

So, do you use your phone's NFC functionality? If you do, then it is probably for something like pairing your handset with accessories, for sharing files with buddies, or for making contact-less payments. The list of uses for NFC, however, doesn't end here.
After a little digging on the internet, we managed to find several rather unusual, yet pretty clever uses for NFC technology. For example, did you know that NFC-enabled smartphones could be used to unlock doors? Or that jewelry with embedded NFC chips could trigger commands when near a smartphone? Read on to learn more.
Things that are NOT allowed: