4 Byte UID Changeable 1K S50 Key Fob

$2.00$22.50

SKU: MT_KF_S50 Category:
Brand: MTools Tec

UID and UFUID types have backdoor command support to change the UID.

CUID type can be changed with all NFC devices.

There are 3 types of UID Changeable S50 China Mifare Key Fob, CUID Key Fob, UID Key Fob, UFUID Key Fob. The main difference is the method of changing UID and backdoor commands support.

Specification

Chip Genuine Mifare 1K
Size 85.5 x 54 x 0.8mm
Frequency 13.56MHz
Protocol ISO14443A
Memory 1024 bytes
Material PVC
Operating temperature -20 ~65 ℃
Writing Cycle ≥100,000 times

Ordinary card VS Chinese magic card

How to clone card to CUID card on Android?

The block 0 of the CUID card is changeable, so you just need to write block 0 or full dump to the CUID card with the NFC device.

If the BCC byte or SAK byte is invalid, MTools will not write block 0 to prevent damaging the card.

Apps for China Mifare Key Fob

MTools
RFID Tools
Mifare Classic Tool

Specifications

Card Type

, ,

Amount

1 pc, 5 pcs, 10 pcs

Memory

Device Support

, , , ,

Card Type

, ,

Amount

1 pc, 5 pcs, 10 pcs

Memory

Device Support

, , , ,

Software

Android App

,

iOS App

Android App

,

iOS App

Card Type

, ,

Amount

1 pc, 5 pcs, 10 pcs

UID Changeable

Yes (Backdoor Command)

Working Temperature

-20°C-70°C

Memory

Device Support

, , , ,

Android App

,

iOS App

19 reviews for 4 Byte UID Changeable 1K S50 Key Fob

  1. Michael Garcia (verified owner)

    If you need a Mifare key fob that’s easy to use and has a changeable UID, this is the one for you.

  2. Michael Garcia (verified owner)

    If you need a Mifare key fob that’s easy to use and has a changeable UID, this is the one for you.

  3. Sarah (verified owner)

    This key fob works perfectly with my system. I was able to clone my old key fob onto it with ease.

  4. Max (verified owner)

    This key fob has saved me so much time and effort. Changing the UID is a breeze.

  5. Sam (verified owner)

    It’s so nice to have a key fob that I can easily change the UID on. It’s saved me so much time and hassle.

  6. William Brown

    The S50 Mifare key fob is exactly what I was looking for. Its UID-changeable feature is top-notch.

  7. William Brown

    The S50 Mifare key fob is exactly what I was looking for. Its UID-changeable feature is top-notch.

  8. Tom (verified owner)

    I was skeptical about a key fob that could change the UID, but this one exceeded my expectations.

  9. Mary (verified owner)

    This key fob is exactly what I needed. It’s so easy to change the UID and works perfectly with my system.

  10. Rob (verified owner)

    This key fob works exactly as advertised. I’ve had no issues with it at all.

  11. John Smith

    I was able to easily change the UID on this S50 Mifare key fob. Works great with my Pixel phone’s NFC reader.

  12. John Smith

    I was able to easily change the UID on this S50 Mifare key fob. Works great with my Pixel phone’s NFC reader.

  13. Emily (verified owner)

    I was a bit nervous about attempting to clone my key fob, but this key fob made it so easy.

  14. Anonymous (verified owner)

    Good device

  15. 김 성헌 (verified owner)

    추천합니다. very good~~

  16. Anonymous (verified owner)

  17. Jobs (verified owner)

    Nice blue card. The same as the description.

  18. Anonymous (verified owner)

  19. Martin (verified owner)

Add a review

4 Byte UID Changeable 1K S50 Key Fob
$2.00$22.50 Select options