RFID chips

Radio-frequency identification (RFID) chips are devices normally used for identification, but can be used to transfer any type of data within a short range. They are wirelessly powered by the RFID reader, so they do not usually require a battery to function. This has made RFID tags come into popular use as an implant by grinders as they can be completely sealed, and never need recharging. They can be easily cloned, and so should be used only in security systems with multi-factor authentication.