It can back up to four RFID key access credentials to a small device in the driver design.
Keysy RFID Duplicator, copy RFID with one push 958-20
Keysy is a new product that can back up to four RFID key access credentials into a small device in driver design. It unites all your RFID on one of your keychains so you can keep the originals at home and you don't have to pay expensive replacement fees if you lose them.
Two simple steps to RFID_Security