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UID CUID FUID Changeable M1 S50 Block 0 Writable Sticker Disc

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SKU: SF6654

$4.95
Including Tax
pcs

Writable UID / CUID/ FUID Ultra Thin Disc

UID Changeable discs are used to duplicate Mifare Classic 1K access cards and keyfobs.  All three types of discs can be programmed with the Proxmark3, ACR122U or iCopy 2/3/8 devices.

Please note regarding interference with your phone:
In the above options, you can select an anti-interference sticker which allows you to place the disc either (1) Under the battery cover of your phone (if your phone has a removable battery cover), or (2) inside your phone case (if you are using a phone case) and put the anti-interference sticker on top of it (so it is between the chip of your phone and the chip of the disc), which usually prevents the NFC chip inside your phone (Apple Pay, Samsung Pay etc) interferring with the disc chip.  This is not necessary if you are using the disc somewhere else that is not in close contact to another 13.56Mhz chip, including if you use a phone that doesn't contain a NFC chip.  In such case, you may be better not to use the anti-interference sticker.

IMPORTANT: There are three different types of discs that you can choose from:

Type 1: Normal GEN1 UID Changeable Tags:

  • All blocks (including Block 0) can be re-written multiple times 
  • Use ProxMark3 (Magic Chinese Guy function) or libnfc to change UID. 
  • Uses "backdoor" technique to change/rewrite UID. 
  • UID can be changed multiple times. 
  • Not suitable for MCT on Android (Mifare Classic Tool)
  • Answers to Chinese magic backdoor commands (GEN 1a): YES 

Type 2: Special GEN2 CUID Tags:

  • All blocks (including Block 0) can be re-written multiple times 
  • Not easily detectable by a system with "anti-clone" feature 
  • IMPORTANT: Fob will die if an invalid Block 0 is written 
  • Use normal commands. eg. hf mf wrbl 0 B FFFFFFFFFFFF a473f601200804006263646566676869 
  • Answers to Chinese magic backdoor commands: NO 

Type 3: Special GEN2 FUID Write-Once Tags:

  • Block 0 can only be written once. 
  • Even greater protection from a system with "anti-clone" feature.
  • Also provides protection from accidental future modification of Block 0.
  • Use normal commands. eg. hf mf wrbl 0 B FFFFFFFFFFFF a473f601200804006263646566676869 
  • Answers to Chinese magic backdoor commands: NO

 

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