Understanding How Adhesive Proximity Tags Work

Understanding How Adhesive Proximity Tags Work

by Mike Boehm on October 27, 2025

Adhesive proximity tags, often called 26-bit proximity adhesive tags, are one of the most convenient and adaptable ways to add access control capability to everyday items. Instead of carrying a separate card or fob, users can stick these ultra-thin adhesive tags directly onto their phone, wallet, or ID badge, turning almost any surface into a proximity credential.

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How Adhesive Proximity Tags Function

At their core, adhesive proximity tags work just like traditional proximity cards. Each tag contains a miniature 125 kHz RFID chip encoded in a standardized 26-bit Wiegand format, such as the common H10301 used across most access control systems. When the tag comes within range of a compatible reader—like those from HID, AWID, Farpointe, or Kantech—the reader energizes the chip and retrieves the encoded data, verifying access permissions within the system.

The adhesive tag’s compact, flexible design makes it easy to retrofit existing credentials. For instance, if a facility already issues photo ID cards, employees can simply apply a 26-bit proximity adhesive tag to the back of their card. The tag transmits the same facility code and card number as a traditional card but adds zero bulk.

Benefits of Using Adhesive Proximity Tags

  • Universal compatibility: Works with most access systems that use the H10301 26-bit format.
  • Compact and durable: The thin adhesive layer is designed for long-term adhesion without residue or demagnetization.
  • Convenient upgrades: Perfect for converting smartphones, badges, or keychains into access credentials.
  • Cost-effective: Often less expensive than replacing worn or lost plastic cards.

Applications in Modern Access Control

Adhesive proximity tags are ideal for environments where flexibility matters—such as office buildings, apartment complexes, universities, and secured laboratories. They are especially popular for multi-credential users, like maintenance teams or IT staff, who may need to carry credentials for multiple systems.

Because these tags conform to the same 26-bit proximity encoding standards used by most commercial readers, they can be seamlessly added to existing systems without any software or hardware modifications.

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