CIFY 20pcs Changeable UID Smart Card, Rewritable 13.56MHz RFID IC Blank Card for 1K S50 MF1 Mi-fare Door Access Control Block 0 Sector
Product ID: 344468667
📡13.56MHz frequency
🔄100,000+ rewrites
🔐Unique changeable encrypted UID
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🔑 Unlock the future of smart access with endless possibilities!
The CIFY 20pcs Changeable UID Smart Cards are rewritable RFID cards operating at 13.56MHz, compatible with all major door access systems. Each card supports over 100,000 read/write cycles and features a unique, changeable encrypted UID for enhanced security. With a reading range of up to 10cm and durable construction suitable for extreme temperatures, these cards offer flexible, reliable, and secure access control solutions for offices, apartments, and more.
| ASIN | B097BNYRP4 |
| Batteries Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 48,909 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 101 in Medical RFID Supplies |
| Colour | White |
| Customer Reviews | 3.5 3.5 out of 5 stars (25) |
| Date First Available | 30 April 2021 |
| Guaranteed software updates until | unknown |
| Item Package Quantity | 1 |
| Item Weight | 130 g |
| Manufacturer | CIFY |
| Manufacturer reference | CIFY-20 UID |
| Part Number | CIFY-20 UID |
| Product Dimensions | 8.5 x 5.4 x 0.1 cm; 130 g |
P**G
Poor Quality for Printing on
Product is cheaply made, rfid warps the plastic coating on the outside and 12 out of 20 were scratched already Not good for full cover id card printing, chip worked fine on 18 of them, one locked blank 😳 the other just doesn't work at all!
R**N
Not 2nd Gen with writable UID
This was sold as writable UID and is not. Mifare tool tells me it is not a 2nd Gen tag after it fails to change Block 0
D**M
UID not writable
Despite the claims in the listing, block 0 UID is not writable. You can only write 63/64 blocks
I**R
It is not UID rewritable
I bought it primarily for the UID rewrite but it does not work with the 'MIFARE Classic Tool'. This is a Mifare classic indeed, but the block 0 is not rewritable therefore not as advertised.
M**Y
UID cannot be changed.
As you can see in the comparison, the UID is incorrect from the dump as such these do not allow UID change. or even let you write the UID.
A**B
Card lasted 2 days
Card lasted 2 day before not registering on any reader
T**M
Don't allow change to UID
Don't work as advertised. Won't allow writing to UID (sector 0). A similar pack of 100 cards advertised on Amazon work just fine.
Trustpilot
4 days ago
2 weeks ago