What is the UID Rewrite Changeable 13.56mhz Smart IC Key Tag?

The UID Rewrite Changeable 13.56mhz Smart IC Key Tag is a versatile RFID tag that operates at a frequency of 13.56 MHz and supports UID rewriting. This means users can change the unique identifier, making it suitable for various applications such as access control, attendance systems, and asset tracking. It features a writable zero sector, allowing you to customize data and enhance functionality, which is especially beneficial for developers and integrators looking for tailored solutions.

How do I use the 13.56mhz Smart IC Key Tag with an ACR122U-A9 device?

Using the 13.56mhz Smart IC Key Tag with an ACR122U-A9 device is straightforward. Simply connect the ACR122U-A9 to your computer or compatible device, install any necessary software, and place the tag near the reader. This will allow the device to read or write data to the tag. It's widely applied in scenarios such as cloning existing RFID cards or programming new ones for custom applications like loyalty programs or secure entry systems.

Can I change the UID on the Smart IC Key Tag?

Yes, the Smart IC Key Tag allows you to change its UID. This feature is particularly significant for scenarios where tags need to be reassigned or refreshed to maintain security. You can use programming tools alongside the ACR122U-A9 reader to rewrite the UID as needed. This flexibility supports applications like remapping access points or controlling multiple devices with the same tag, making it invaluable in dynamic environments.

What is the capacity of the S50 1k Card included in this product?

The S50 1k Card has a storage capacity of 1 kilobyte, which is sufficient for storing multiple applications and functionalities. It includes various sectors for data organization, allowing users to manage different uses effectively. For instance, you could store encrypted access codes, user profiles, or loyalty program information, making it a practical choice for businesses looking to streamline operations using RFID technology.

What makes this product suitable for cloning?

This product is designed specifically for cloning due to its writable and changeable UID feature. Utilizing the ACR122U-A9 device, you can easily copy data from an existing RFID tag and write it onto the Smart IC Key Tag. This is particularly useful for organizations needing to create duplicates for access control systems or membership cards without compromising security.

How many key tags are included in one purchase?

Each purchase of the UID Rewrite Changeable Smart IC Key Tag includes ten pieces. This bulk option is perfect for businesses and developers who need multiple tags for various projects or multiple users. For instance, a small company might distribute them among employees for secure access, or a developer might test multiple applications with different tags.

Can this key tag be used for NFC applications?

Yes, the 13.56mhz Smart IC Key Tag can be used for NFC (Near Field Communication) applications. Its compatibility with NFC technology enables it to function in situations such as mobile payments, smart advertising, and data sharing. This makes it an appealing option for developers looking to create innovative solutions that interface with smartphones and other NFC-enabled devices.

What security features does the Smart IC Key Tag provide?

The Smart IC Key Tag features several security measures, including the ability to encrypt data and change UIDs, ensuring that unauthorized duplication is minimized. By programming unique identifiers and utilizing encryption protocols, businesses can protect sensitive information stored on the tags. This is critical for applications requiring stringent security, such as employee identification and secure entry systems.

What is the typical range of this key tag when used with a reader?

When used with an appropriate reader like the ACR122U-A9, the typical read range for the 13.56mhz Smart IC Key Tag is about 2 to 10 centimeters, depending on the reader's strength and the tag's positioning. This range is ideal for most access control environments, ensuring quick and efficient scanning as users present the tag near the reader.

Where can I buy the UID Rewrite Changeable Smart IC Key Tag in Wallis and Futuna Islands?

You can purchase the UID Rewrite Changeable Smart IC Key Tag from Ubuy in Wallis and Futuna Islands. Ubuy offers a convenient platform to find this product, among others, by providing various options for your RFID and cloning needs. With Ubuy, you'll benefit from a special focus on tech products, ensuring that you get the right items for your projects or business applications.

How to Shop UID Rewrite Changeable 13.56mhz Smart IC Key Tag Online From Ubuy?

It’s easy to shop UID Rewrite Changeable 13.56mhz Smart IC Key Tag online from Ubuy. You just have to search for the product, choose your shipping method while checking out and get it delivered to your location.

Is UID Rewrite Changeable 13.56mhz Smart IC Key Tag Available to Shop Online in Wallis and Futuna Islands?

Yes, at Ubuy Wallis and Futuna Islands this product is available for you to shop at a reasonable price. The UID Rewrite Changeable 13.56mhz Smart IC Key Tag is not available locally but you can trust us with our express shipping services.

How Long Does It Take to Get Product After Placing the Order?

The delivery time of your ordered product varies as per what you've ordered and the shipping method that you've chosen. The estimated delivery time is mentioned during the checkout process, so be carefree while shopping.

XCRFID

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

This MF1 1K's UID card has a rewritable Sector 0 block 0, making it a perfect solution for lost or replaceable M1 cards.

XCRFID

Item #: 12754247

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

87% of respondents would recommend this to a friend

Item #: 12754247

XPF 1800

Price Details

Excluding Shipping & Custom charges ( Shipping and custom charges will be calculated on checkout )

^{*All items will import from US}

Availability : In stock

Imported from USA store

QTY:

Only 10 items left in stock.

Order now and get it around Friday, October 30

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This MF1 1K's UID card has a rewritable Sector 0 block 0, making it a perfect solution for lost or replaceable M1 cards.

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What Stands Out

Rewritable Technology

These key tags feature rewritable technology, allowing users to easily update information as needed, offering flexibility for various applications in access control and data management.

Large Quantity Pack

Sold in packs of 10, these key tags provide excellent value for businesses or organizations needing multiple units for inventory or event management, ensuring cost-effectiveness without sacrificing quality.

Versatile Use

Designed for various applications, from RFID access to membership cards, the XCRFID key tags cater to diverse needs, making them ideal for schools, events, and businesses looking for reliable identification solutions.

Product Details

UID Changeable MF1K Key Tag with 4 byte UID
Compatible with ACR122U-A9 for Read, Write, and Copy functions
Operates at 13.56MHz frequency for door access control systems
1K byte EEPROM Memory and compliant to ISO/IEC 14443A protocol
Rewritable Sector 0 Block Zero with user definable access conditions
Includes 10pcs X UID Changeable Magic IC Tag in the package

Scanner Type	RFID scanner
Connection Type	USB
Resolution	10000
Media Type	rfid
Minimum System Requirements	Windows 7
Brand	XCRFID
Model Name	MF1K Key Tag
Unit Count	10 Count
Manufacturer	XCRFID
Connectivity Technology	USB
Maximum Media Size	3.37 x 2.125 inches
Number of Items	10
Minimum Required Operating System Version	Windows 7
Package Weight	1 Pound

Who Should Buy?

Event Management
Ideal for organizers needing quick, rewritable access control tags for events or conferences.
Educational Use
Perfect for schools requiring ID badges that can be reused and reprogrammed for different students.
DIY Projects
Great for hobbyists looking to create customizable RFID solutions for personal or innovative projects.

High-Security Systems
Not suitable for environments requiring strict security protocols where tamper-resistant or permanent tags are needed.

Product Description

About This Item

Introducing the UID Changeable MF1 1K Key Tag - the ultimate solution for anyone who has ever lost an irreplaceable M1 Card ID. With this innovative card, you won't need to re-enroll new cards. Simply program the UID of your lost card onto the MF1 1K Key Tag and you'll have a brand new card with the exact same functionality. This card works just like normal M1 cards, with 16 Sectors and 4 Blocks each Sector.

However, the Sector 0 Block Zero is writable, giving you the flexibility to customize your access conditions and password for each memory block. Not only does the UID Changeable MF1 1K Key Tag offer convenience and versatility, but it also boasts impressive specifications. With a capacity of 1k bytes EEPROM memory and the ability to be rewritten up to 100,000 times, this card is built to last. Plus, it has a read distance of 0 to 10 cm (depending on the R/W device), ensuring reliable performance every time. The MF1 1K Key Tag is made of high-quality PVC material, ensuring durability and longevity.

It can be used in a variety of applications, including loyalty programs, ticketing systems, identification, and access control. With this package, you'll receive 10 pieces of the UID Changeable Magic IC Tag, allowing you to take advantage of this innovative technology in multiple settings. Don't miss out on the opportunity to streamline your access control system with the UID Changeable MF1 1K Key Tag. Keywords: UID changeable, MF1 1K key tag, rewritable zero 0 sector, block copier, MF1 S50 1k smart IC card, loyalty, ticketing, identification, access control.

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Customer Questions & Answers

Question: How to Shop UID Rewrite Changeable 13.56mhz Smart IC Key Tag Online From Ubuy?

Answer: It’s easy to shop UID Rewrite Changeable 13.56mhz Smart IC Key Tag online from Ubuy. You just have to search for the product, choose your shipping method while checking out and get it delivered to your location.
Question: Is UID Rewrite Changeable 13.56mhz Smart IC Key Tag Available to Shop Online in Wallis and Futuna Islands?

Answer: Yes, at Ubuy Wallis and Futuna Islands this product is available for you to shop at a reasonable price. The UID Rewrite Changeable 13.56mhz Smart IC Key Tag is not available locally but you can trust us with our express shipping services.
Question: How Long Does It Take to Get Product After Placing the Order?

Answer: The delivery time of your ordered product varies as per what you've ordered and the shipping method that you've chosen. The estimated delivery time is mentioned during the checkout process, so be carefree while shopping.

XCRFID Home Security Systems Editorial Review

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 is an effective solution for users seeking to manage their NFC needs. Reviewers have noted that these cards are compatible with various tools, particularly Mifare Windows Tool (MWT) that facilitates the writing process on Gen 1 cards seamlessly. Users have successfully cloned keycards for different purposes, like RV park access and datacenter entry, showcasing their reliability. Overall, the majority found these key tags to be of excellent value and functionality, making them a recommended choice for RFID applications.

Customer Reviews & Ratings

4.2

90 customers ratings

5 Star

70%
4 Star

10%
3 Star

4%
2 Star

4%
1 Star

12%

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Pros

Includes 10 writable NFC key tags
Compatible with Mifare Windows Tool
Reliable cloning for various uses
Good sensitivity with door lock readers
Easy to write using Flipper Zero

Platform Trust & Buyer Confidence

4.2/5 9704 reviews

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“Great products and very good service: very easy and very fast international delivery.”

9 September 2026 · via Trustpilot

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“Wonderful online shopping experience, smooth transaction from the start. Payment method works conveniently and delivery is unexpectedly fast and reliable. You go the extra mile for service. What makes this even more amazing, you deliver to Namibia. I will remain a happy Ubuy customer and will increase my purchases for sure! Thank you!”

10 September 2026 · via Trustpilot

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“I received exactly what I ordered I was skeptical about your site because that was my first time to order. But the order came timely and neatly packaged. I was not disappointed. Thank you.”

11 September 2026 · via Trustpilot

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“Easy to find and order what you want on the website. Delivery is quick to the UK”

8 September 2026 · via Trustpilot

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Important information

Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
Not all the products listed on Ubuy are for sale, as Ubuy is a global search engine. Products are subject to export/trade regulations.

XPF 1800

Order now and get it around Friday, October 30

QTY:

Only 10 items left in stock.

Secured transaction

PCI DSS compliant and ISO 27001:2022 certified, with encrypted payments and full buyer protection on every order.

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Fastest cross-border delivery

Features & Benefits

Works similar to normal M1 cards with 16 Sectors and 4 Blocks each Sector, writable Sector 0 Block 0
Ideal for replacing lost M1 cards by programming new MF1 1K's UID to the UID of the lost card
User-definable access conditions and password for each memory block
Capacity of 1k bytes and can be rewritten up to 100,000 times
Supports ACR122U-A9 read, write, and copy cards and can copy S50 chip cards
Suitable for loyalty, ticketing, identification, and access control applications

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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