Patent ID: 11948031
Assignee: JIANGSU TOOKER ROBOTICS CO., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 2:
3. The authentication method according to claim 2, characterized in that a method for measuring the persistence time comprises the following steps:
data are written by a reader into the volatile memory of the first tag or the second tag, and need to be maintained by charging; and
the reader is turned off, and waits for a time t before querying the volatile memory for the data: if the data change, the current waiting time is taken as the persistence time of the volatile memory; if the data do not change, the waiting time t is updated with the step time Δt before returning to the operation of writing the data, until the waiting time corresponding to the data change is acquired.