I was trying to use the PN532 to read my phones NFC UID, but i found out that UID starts with 08 and the rest of 3 bytes are random. Can someone please explain if i can read something unique(or at least not random) from my phone with the PN532?
I try to read that unique info from my phone, compare it with a constant in my code and and if they match sent an impulse to a relay to open a door.
Thanks in advande.
If this is possible you will very likely need to do some really clever stuff. Your smartphone will not provide a unique number to anyone just because they ask. That would be really useless and not in your interest.
I suspect at the minimum you will need to learn about the protocol used and some cryptography. It is possible that this functionality cannot be used by the user without some sort of certification. Maybe your phone manufacturer only allows companies e.g. banks or retail to use this feature.
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