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5 - Pack NFC 1k S50 Changeable UID Keyfob Tags with Android App Modification Capability (Red)

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Product Overview:

🌟 Introducing the 5pcs GEN2 CUID Android App MCT Modify UID Changeable Tag Keyfob, a revolutionary NFC 1K S50 13.56MHz card designed for versatility and security. This innovative tag enables users to effortlessly change the UID (Unique Identifier) of each card, making it an essential tool for those who require customizable access control and RFID applications.

🔧 Product Features:

UID Customization: Enjoy the unparalleled ability to modify the UID of the card's Sector 0 Block Zero. This feature allows for ultimate flexibility, enabling users to assign any UID they desire.
Secure Default Password: The card is preset with a standard default password of 12 F, FFFFFFFFFFFF, ensuring that users have a secure starting point for their customization.
Compatibility: Designed for seamless integration with NFC-enabled Android devices through the dedicated MCT app, allowing users to conveniently adjust UIDs on the go.

🔒 Understanding UID vs. CUID Cards:

🪶 Both UID cards and CUID cards serve unique functions within RFID systems. The UID card is a traditional copy card that permits repeated erasing and writing across all sectors. However, it may experience failures when encountering card readers equipped with firewalls. In contrast, the CUID card stands out as a rewritable anti-shielding solution, capable of bypassing firewalls and functioning effectively even when UID copying is invalid.

⚡ Important Note:

It is essential to understand that standard 13.56MHz RFID reader/writers are unable to write to CUID cards. To utilize the full potential of these cards, employ NFC phone applications such as MCT, or specialized devices like acr122U, PM5/Pro, 300CD, iCopy8, and Proxmark 3.

🔒 With these advanced features, the 5pcs GEN2 CUID Android App MCT Modify UID Changeable Tag Keyfob is your ultimate solution for secure, customizable RFID applications.