RFID tags with brand protection and loss prevention

摘要

Brand-protection codes may be used to maintain authenticity chains for items or tags across a number of different entities. A first entity, such as a tag or item manufacturer, may generate a first brand-protection code (BPC) based on a first key and a tag or item identifier and store the first BPC on a tag associated with an item. A second entity that receives the tag and/or item may attempt to authenticate the first BPC. If the second entity authenticates the first BPC, the second entity may generate an authentication code based on a second key and the first BPC and/or the tag/item identifier, and may write the authentication code to the tag. In some embodiments, the authentication code may be a second brand-protection code, or an exit code that allows the item to exit a facility such as a retail store.

主权项

1. A method for maintaining an authenticity chain for an item approved to exit a facility, the method comprising:
reading a first identifier from an RFID tag attached to the item; reading a first brand-protection code from the RFID tag, the first brand-protection code based on at least the first identifier; authenticating the first brand-protection code; generating an exit code based on at least a second identifier; subsequent to authenticating the first brand-protection code, overwriting at least a portion of the first brand-protection code on the tag with the exit code; and authenticating the exit code at an exit of the facility.