--- product_id: 381128072 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: "£19.79" currency: GBP in_stock: true category: "Xcrfid" url: https://www.desertcart.co.uk/products/381128072-uid-changeable-mf1-1k-key-tag-rewritable-zero-0-sector store_origin: GB region: United Kingdom --- # 1K byte EEPROM memory capacity UID changeable for seamless cloning Supports ACR122U-A9 read/write & copy UID Changeable MF1 1K Key Tag Rewritable Zero 0 Sector 0 Block Copier MF1 S50 1k Smart IC Card 10pcs/lot **Brand:** xcrfid **Price:** £19.79 **Availability:** ✅ In Stock ## Summary > 🔐 Unlock seamless card cloning and never lose access again! ## 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?** £19.79 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/381128072-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 - • **Durable & Rewritable:** Supports up to 100,000 rewrite cycles for long-term use - • **High-Capacity Memory:** 1K byte EEPROM with 16 sectors and 64 blocks for versatile data storage - • **Secure Access Control:** User-definable passwords and access conditions for each memory block - • **Universal Compatibility:** Works flawlessly with ACR122U-A9 and standard MF1 S50 chip readers - • **Clone Lost Cards Instantly:** Reprogram the UID to replace lost M1 cards without re-enrollment ## Overview The XCRFID UID Changeable MF1 1K Key Tag is a rewritable smart IC card featuring a 1K byte EEPROM memory, 16 sectors with 4 blocks each, and a unique writable Sector 0 Block Zero for UID customization. Compatible with ACR122U-A9 readers, it enables precise cloning of lost M1 cards, supports up to 100,000 rewrites, and offers user-defined security settings, making it ideal for loyalty, ticketing, identification, and access control applications. ## Description Feature This card works the same as normal M1 cards. Works exactly like the MF1 S50, with 16 Sectors and 4 Blocks each Sector, but the Sector 0 Block Zero can be writable. It'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 MF1 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 times Read Distance: 0 ~ 10 cm(depends on the R/W device) Material: PVC Application Loyalty Ticketing Identification Access Control Package Include 10pcs X UID Changeable Magic IC Tag ## Features - UID Changeable Zero 0 block rewritable with 4byte UID - It supports ACR122U-A9 read write and copy cards - It can copy S50 Chip cards - 1K byte EEPROM Memory , Copy card - Rewrite writable smart IC Tag ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0748DBKW2 | | Best Sellers Rank | #143,812 in Office Products ( See Top 100 in Office Products ) #163 in Identification Badges | | Brand | XCRFID | | Connection Type | RFID | | Connectivity technology | RFID | | Manufacturer | XCRFID | | Media Type | rfid | | Number of Items | 10 | | Resolution | 10000 | | Scanner Type | RFID scanner | | Scanner type | RFID scanner | | Unit Count | 10 Count | | Unit count | 10 Count | ## Product Details - **Brand:** XCRFID - **Connectivity technology:** RFID - **Resolution:** 10000 - **Scanner type:** RFID scanner - **Unit count:** 10 Count ## 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) ## 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? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.uk/products/381128072-uid-changeable-mf1-1k-key-tag-rewritable-zero-0-sector](https://www.desertcart.co.uk/products/381128072-uid-changeable-mf1-1k-key-tag-rewritable-zero-0-sector) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-08-11*