LEXI 20pcs Rewritable UID Smart Card, 13.56MHz Changeable RFID PVC Blank Card for 1K S50 MF1 Mi-fare Door Access Control, Block 0 Sector

Worked great to create NFC card skylanders

Make sure you get the right cards!! RFID cards arent all the same, learn from my mistakes..

These have preset UID, however, can be reprogrammed/overwritten with proper writer.

Even though it says in the title, when tried, a writer is only able to access 63 of 64 blocks, meaning it's NOT 0 block rewritable. For some uses, these will work, but I HIGHLY recommend to find some other cards. They just lied here.

I bought these to make skylandersThese were a pain to get to work in the first place And they only work for the 3ds. Also 3 of them broke in the process. As in i can't right to them anymore. These are not re writable.Also they do not work on the wii u. They scan in at first but in a few seconds they stop working and it says they may be corrupted. Then it says "you may need to recover your skylanders". I selected it but then it stops working. I've tried with 3 different ones on the wii u.I guessing they work on the 3ds because u just have to scan them in once, but with the wii u the game needs to constantly read them.

As a question to the seller, are these block 0 writable? I have tested one card so far, and am unsure on what procedure is used for writing block 0. I know of 2. The card reads good though.

I tried to clone my mifare card to this one, but Proxmark3 doesn't recognize it as Mifare 1k rfid.

The title says it all