How Can Blocks of Data Be Locked?

By RFID Journal

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Ask The ExpertsHow Can Blocks of Data Be Locked?
RFID Journal Staff asked 11 years ago

Can you please explain how this would be done?

—Name withheld


Locking an individual password to prevent subsequent reads and/or writes of that password, locking and unlocking individual memory banks, and permanently locking a password or memory are all part of the EPC Gen 2 air-interface protocol. The interrogator sends "lock," "unlock" or "permalock" commands to a tag. The exact command structure is spelled out in the standard, which you can download here.

—Mark Roberti, Founder and Editor, RFID Journal

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