--- product_id: 530568712 title: "UID Changeable MF1 1K Key Tag Rewritable Zero 0 Sector 0 Block Copier MF1 S50 1k Smart IC Card 10pcs/lot" brand: "xcrfid" price: "Β£22.00" currency: GBP in_stock: false category: "Xcrfid" url: https://www.desertcart.co.uk/products/530568712-uid-changeable-mf1-1k-key-tag-rewritable-zero-0-sector store_origin: GB region: United Kingdom --- # 1K byte EEPROM rewritable memory UID changeable 4-byte unique ID Compatible with all door access systems UID Changeable MF1 1K Key Tag Rewritable Zero 0 Sector 0 Block Copier MF1 S50 1k Smart IC Card 10pcs/lot **Brand:** xcrfid **Price:** Β£22.00 **Availability:** ❌ Out of Stock ## Summary > πŸ” Clone, Customize, Control β€” Unlock your access game! ## Quick Answers - **What is this?** UID Changeable MF1 1K Key Tag Rewritable Zero 0 Sector 0 Block Copier MF1 S50 1k Smart IC Card 10pcs/lot by xcrfid - **How much does it cost?** Β£22.00 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/530568712-uid-changeable-mf1-1k-key-tag-rewritable-zero-0-sector) ## Best For - xcrfid enthusiasts ## Why This Product - Trusted xcrfid brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **High Rewrite Endurance:** Up to 100,000 rewrite cycles for long-lasting reliability - β€’ **Robust Memory Capacity:** 1K byte EEPROM supports 16 sectors Γ— 4 blocks for versatile data storage - β€’ **Plug & Play Convenience:** Supports Windows 7+ with USB connectivity for instant deployment - β€’ **Seamless UID Customization:** Effortlessly clone lost M1 cards with writable Sector 0 UID block - β€’ **Universal Access Compatibility:** Works flawlessly with ISO/IEC 14443A protocol and ACR122U-A9 readers ## Overview The UID Changeable MF1 1K Key Tag is a rewritable smart IC card featuring a unique 4-byte UID that can be customized via dedicated tools. With 1K byte EEPROM memory organized into 16 sectors and 4 blocks each, it supports up to 100,000 rewrite cycles and operates at 13.56MHz frequency. Fully compatible with ISO/IEC 14443A protocol and ACR122U-A9 readers, it’s the perfect solution for replacing lost M1 cards without re-enrollment, ideal for access control, loyalty, and ticketing systems. ## Description Please make sure you know how to use it before purchase !!! Feature This card works the same as normal M1 cards. Works exactly like the MFS501k, with 16 Sectors and 4 Blocks each Sector, but the Sector 0 Block Zero can be writableIt's advantage This is a perfect solution for a lost irreplaceable M1 Cards ID, you don't need to re-enroll new cards. Just program this new MF 1K's UID to the UID of lost card then you have a new Exactly the same card. User definable access conditions & password for each memory block Organized in 16 sector with 4 blocks of 16 bytes each (one block consists of 16 byte)Specifications Protocol: ISO14443A Capacity: 1k bytes EEPROM memory Rewrite Times: 100,000 timesRead Distance: 0 ~ 10 cm(depends on the R/W device) Material: PVCApplication LoyaltyTicketingIdentificationAccess ControlPackage Include 10pcs X UID Changeable IC Tag ## Features - UID Changeable Zero 0 block rewritable with 4 byte UID. You can through our UID Card Tools read out the dump file , Then back up . The UID Number will be changed - Please Noticed: It supports original ACR122U-A9 Read Write and Copy Cards. Please make sure you know how to use it before purchase !!! - Working frequency is 13.56MHz. Compatible with all kinds of door access control system - Rewrite Writable Smart IC Tag , 1K byte EEPROM Memory , Copy card. Fully compatible to MFClassic 1K,4 byte UID, organized in 16 sectors of 4 blocks, compliant to ISO/IEC 14443A protocal. - THIS ITEM IS NOT INTENDED FOR USERS UNDER 12 YEARS OLD ! ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0748DBKW2 | | Best Sellers Rank | #829,414 in Electronics ( See Top 100 in Electronics ) #802 in External Memory Card Readers | | Brand | XCRFID | | Brand Name | XCRFID | | Connectivity Technology | USB | | Manufacturer | XCRFID | | Media Type | rfid | | Minimum System Requirements | Windows 7 | | Model Name | MF1K Key Tag | | Network Connectivity Technology | USB | | Resolution | 10000 | | Scanner Type | RFID scanner | ## Product Details - **Brand:** XCRFID - **Connectivity Technology:** USB - **Maximum Media Size:** 3.37 x 2.125 inches - **Minimum Required Operating System Version:** Windows 7 - **Minimum System Requirements:** Windows 7 - **Model Name:** MF1K Key Tag - **Resolution:** 10000 - **Scanner Type:** RFID scanner ## Images ![UID Changeable MF1 1K Key Tag Rewritable Zero 0 Sector 0 Block Copier MF1 S50 1k Smart IC Card 10pcs/lot - Image 1](https://m.media-amazon.com/images/I/71djmNuKmuL.jpg) ![UID Changeable MF1 1K Key Tag Rewritable Zero 0 Sector 0 Block Copier MF1 S50 1k Smart IC Card 10pcs/lot - Image 2](https://m.media-amazon.com/images/I/71FD33HvyAL.jpg) ![UID Changeable MF1 1K Key Tag Rewritable Zero 0 Sector 0 Block Copier MF1 S50 1k Smart IC Card 10pcs/lot - Image 3](https://m.media-amazon.com/images/I/718ACpibDmL.jpg) ![UID Changeable MF1 1K Key Tag Rewritable Zero 0 Sector 0 Block Copier MF1 S50 1k Smart IC Card 10pcs/lot - Image 4](https://m.media-amazon.com/images/I/71EAzr+UXJL.jpg) ![UID Changeable MF1 1K Key Tag Rewritable Zero 0 Sector 0 Block Copier MF1 S50 1k Smart IC Card 10pcs/lot - Image 5](https://m.media-amazon.com/images/I/718TIW6vGVL.jpg) ## Frequently Bought Together - UID Rewrite Changeable 13.56mhz Smart IC Key Tag Writable Zero 0 Sector 0 Block GEN1 Back up S50 1k Card for ACR122U-A9 Device Copier Clone 10pcs/lot by XCRFID - Writable Dual chip UID Changeable MF1 1K with 125_LF T5577 Rewritable ID/IC Card for Copy Clone Backup - OBO HANDS Pcs of 10 UID IC Card Changeable Smart Card Clone Card for 1K S50 MF1 RFID 13.56MHz Access Control Block 0 Sector Writable --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.uk/products/530568712-uid-changeable-mf1-1k-key-tag-rewritable-zero-0-sector](https://www.desertcart.co.uk/products/530568712-uid-changeable-mf1-1k-key-tag-rewritable-zero-0-sector) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-05-18*