I’ve just had an xm1+ installed, and I’ve got the adafruit pn532 in an arduino. I’ve got an example sketch for ndef formatting working on a fob. With the freedom to rewrite the uid is it possible to brick it the chip, or am I free to frolic?
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If you don’t lock it or anything you are free to change the UID.
It is possible to brick, but that is rare and can usually be unbricked.
EDIT: You will need to use a special command to change the UID.
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Xm1 are gen1 and so need the “magic command” to change uid this also means if it is bricked by conventional means you can 99% of the time recover by using the “magic command”
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We’ve got a few resources about the magic Gen1
https://tagbase.ksec.co.uk/resources/magic-uid/
Additionally we have the magic chips are cards if you want to test
https://cyborg.ksecsolutions.com/product-category/rfid-tools/rfid-access-cards/
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Thanks for the info! I’m definitely going to pick up a pack to play around with first, because it seems like there’s much I need to learn first.