Have you ever tried to use bluetooth and mess with the settings just to send a picture? Have you ever been in a hurry to unlock your car but you are still searching for the keys? What about if you are lazy to swipe or type your security lock in the morning just to check on your emails? Well, then what do NFC got to do with it then? Well NFC is is a set of standards for smartphones and similar devices to establish radio communication with each other by touching them together or bringing them into close proximity, usually no more than a few inches. In most smartphones today, their back covers can have a small soft-touch pad with contacts on the underside of the back cover. They are the NFC "anteanas". Anyone with those simlar things to can establish something called beaming when being touched to the anteanas. They can send small amounts of infomation like sending a picture, a URL link etc. Using your phone as a key is possible that way.
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