| 摘要 |
A method, comprising: receiving an encrypted signature from a tag associated with an item; determining a dynamic parameter; obtaining a key based at least in part on the dynamic parameter; decrypting the signature with the key to obtain an identifier; and performing an action related to identification of the item, based on the identifier. Also, a system, comprising: a tag reader configured to receive an encrypted signature from a tag associated with an item; and a processing entity configured to (i) determine a dynamic parameter; (ii) obtain a key based at least in part on the dynamic parameter; (iii) decrypt the signature with the key to obtain an identifier; and (iv) perform an action related to identification of the item, based on the identifier.
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