A little confused about writeable vs non writeable uids and which chip i need?

[Pilgrimsmaster]

@SirDeadSquirrel

So i need the xm1?

WELL, YES and NO, But also YES

I think IF it is going to work, that WOULD have been a good choice.

The xM1 is no longer stocked, but it has been replaced by the newer and better xMagic.
This is you best/only xSeries option.

The next size up would be the FlexM1
You can choose gen1a or gen2

"magic" Mifare chips

The Mifare “classic” S50 1k chip? For many years the Mifare MF1ICS50 1k chip was used for all kinds of applications as a “secure chip” for everything from access control to stored value cards, and used for making localized payments within closed systems like public transit and laundry services. However, it uses a security mechanism called “crypto1” which is a simple, proprietary encryption mechanism that hardly has anything to do with modern cryptography. It has been broken for many years now, b…

HOWEVER
these are out of stock until The antenna has been revised
(Personally I think Amal should still sell his old FlexM1 stock, but NO, not Ol’ Mr. Sensible “I think there is a design flaw and they will eventually fail”)

So you could go larger with the FlexMT, and it is an absolutely amazing performer.

BUT

after all that, I would suggest you get yourself a magic test card pack, and practice first on some cards before an implant