Every USB security key issued has a serial number attached to the physical key either on the USB itself or printed on a label attached to the key:
- SoilVision keys have a six digit serial number. For all SVOffice 2009 USB keys, the serial number is printed on the back of a key tag attached by a ball chain to the physical USB key.
- FlexPDE keys have an eight digit serial number. The serial number is printed on a tag attached by string to the physical USB key.