We have just ordered some of the new NFC tags for implanting, basically these chips can store information on them, such as your contact details, or for unlocking your phone and then short cuts to various applications on it. You basically swipe the implanted chip and the relevant information is transfer to the phone. They can also be used with Samsung door locks, in that the chip can operate the locking mechanism, so no need for keys. There are more applications for these, this is just a basic idea of them 🙂

NFC tages or chips