NFC 213 chip UID and Mirror tap count tt

[TesterBester]

I am trying to understand NXP 213 chips for a project. The test 213 chip I have UID starts with 0x04B... and when it is programmed. the URI will output www.abc.com/auth/{uid}?tt=000001. The issue is the uid in the url is 04B... where the 0x is dropped. Is this always the case where UID starts with 0x? Just want to make sure when I query my DB I can find the correct UID. Also for tap count, the mirroring will always be sequential so tt could equal 999999. I was told 1 = 001X00 and 2 = 002X000 but this was not represented in the URI for the chip after it was programmed.

[Kan_Li]

Hi @TesterBester ,

Yes, it is always the case. and for more details, you may quest the related documentation from the NXP doc store, please kindly refer to the following for details.

Have a great day,
Kan

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