HID Global's Seal Tag eTamper are passive contactless HF/NFC-V transponders that stop working when the sealing wire loop is broken, making tampering evident via RFID. Whenever it is important to authenticate an item the tag has been affixed to, or ensure a compartment has not been opened since the time of sealing, these tags should be applied. This version comes with it's UID laser engraved as QR code on the housing for addional optical identification.