Changing UID more than once?

Support
1

Just want to make sure I understand this…
Certain Chips allow you to change the UID say for example to clone a card access, however this can only be done once ?

2

Yes.

Some chips do act like this, there one time writable but… this is not the case with any of the implants, there changeable unlimited times

2 Likes
3

Hey buddy, can I ask what made you think this?
I just want to see if we can make it more clear for everybody.

The “current” dangerous things implants with changable UIDs (NUIDs)

LF
xEM
NExT
FlexEM
FlexMT
FlexNExT RE-ENGINEERING THE FLEXNEXT SO IT IS CURRENTLY UNAVAILABLE

HF
xM1
FlexM1
FlexMN
FlexMT

5

There are actually some MIFARE Classic magic gen2-ish chips which can only have block0 written once (FUID aka 1-write)

There are also MIFARE Classic magic gen2-ish chips which can have block 0 locked with a special command (UFUID)

DT does not sell any implants using these chips

1 Like
6

Ha cheers, yeah I was aware :+1:

Sorry, what I meant was, I was more curious what made @mberni think this was possibly a limitation of DT products, incase there was something somewhere he read or saw :eyes: on DT related sites
because