Enhanced NFC Writable Keyfob Tags - Pack of 5/10/50, GEN2 CUID with App Support (5Black - KeyCUID)

Product Overview:

🌟 Introducing the GEN2 CUID Keyfob, designed for enhanced functionality and versatility in NFC applications. Available in packs of 5, 10, or 50, this Keyfob operates at a frequency of 13.56MHz and is fully compliant with the ISO 14443A standard. Ideal for users seeking to modify UID (Unique Identifier) settings, this keyfob serves as a versatile tool in a variety of settings, including access control and RFID-based applications.

🔧 Key Features:

• Customizable UID: This CUID Keyfob allows complete freedom in programming the 4-byte UID, specifically within Sector 0, Block Zero. Users can easily set the UID to any desired value, providing flexibility for various uses.
• Writable Block: The specific features of the card enable modifications to be made to the UID, ensuring that it can adapt to your requirements seamlessly.
• Compatibility: Users can modify the UID using compatible Android devices equipped with NFC capabilities, utilizing the App MCT (Mi-fare Classic Tools), ensuring a user-friendly experience.

🪶 Usage Instructions:

• To modify the card, use the default password setting of 12 FFFFFFFFFFFF, which activates the writable functions of the UID block.
• For optimal performance when reading and writing to the CUID Keyfob, it is recommended to utilize dedicated RFID readers such as the ACR122U, PM5/Pro, 300CD, iCopy8, X100, or Proxmark 3.

⚡ Important Note:

⚡ It is crucial to ensure that your NFC-capable Android device is compatible with writing to CUID cards, as standard 13.56MHz RFID readers may not support these modifications.