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.