Fair enough
Where you say “NFC”, we all know what you mean
but since you asked for learnings
Where you say “serial number” we know what you mean
but since you asked for learnings
We would say UID (Unique Identification)
and some instances NUID (Non-Unique Identification) explained shortly
Most HF chips cant have their UID altered, so in those instances, you would have to look at enrolling the chip (as above with you PC login)
Some chips we refer to as “Magic” chips, these give you the ability to change their UIDs
one of OUR most popular is the MAGIC Mifare Classic 1k as seen in the xM1 , FlexM1 etc
They are able to emulate Mifare Classic cards, that, due to their 4 byte UID, and their popularity, their sheer numbers mean they are actually a NUID, because the UIDS rolled over and have been reused.
These chips were “cracked” and now Magic versions exist that we can change the NUID on.
You could use one of those (cheap and readily available), but the last little problem for you is,
The Magic Mifare Classic 1k card is a 4byte NUID, your xSIID will be 7 byte, so that would be an issue with the password.
HOWEVER
You can get 7 byte changeable UID and NUID cards, they are just much less common and more expensive than the 4bytes.
Great tool, but it just wont do what you want in this instance.
If you went down the Mifare path, and didnt want to use your PM3, you would be better off using MCT app, It is great for…
Actually, that is probably enough learnings for today
