RFID is the technology which makes it easy to process certain documents by just a swipe of the scanner. It is mostly used with credit cards, passports and the human body. There have been several concerns about this especially about security. Identities can be stolen on one side but it can also be your proof that it is you indeed. Some actually believe that it is the prophesied mark of the beast because it may be the instrument that you may not be able to buy or sell, unless you have it. As of now, certain security measures can be taken to protect your identity from unwanted takers. For human implants, you could be wearing cuffs all the time.