Getting NFC tags real Id, not the byte array about nfcforms

[empaaa]

Applying more information.
When i am reading my nfc tags with my NFid reader, it prints out a 20 diget number. It should be the Id of the tag, but the id of the "NfcFormsTag" object that i get from the code, is a byte array.

Is it possible to convert this array into the 20 diget number that my NFid reader is getting?
Or is that a completly diffrent thing?

[DimitriVanhaecke]

If you are looking for the MifareID
my solution was :
reverse the byte array id
convert array to hex
convert hex to decimal
hope it helps :):):)