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How are 128bit unique identifiers for KE1xF generated?

Question asked by William van Dijk on Jan 25, 2019
Latest reply on Jan 28, 2019 by Robin_Shen

Can anyone tell me how the 128bit unique identifier for the KE1xF series microprocessors is generated? Our current databases for tracking devices is only setup for 64bit serial numbers. We are wondering if we can look at only 64 of the 128 bits and still know that the number is unique.  Are there two of the four SIM_UID registers we could use?