---
name: "nfc-anticol"
section: "1"
platform: "linux"
package: "libnfc"
version: "1.8.0-4"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/nfc-anticol"
---

# nfc-anticol(1)

Demonstration of NFC anti-collision command line tool based on libnfc

## NAME

nfc-anticol - Demonstration of NFC anti-collision command line tool based on libnfc

## SYNOPSIS

**nfc-anticol**

## DESCRIPTION

**nfc-anticol** is an anti-collision demonstration tool for ISO/IEC 14443-A tags, performed by custom constructed frames. The first frame must be a short frame which is only 7 bits long. Commercial SDK's often don't support a feature to send frames that are not a multiple of 8 bits (1 byte) long.  This makes it impossible to do the anti-collision yourself.  The developer has to rely on closed proprietary software and should hope it does not contain vulnerabilities during the anti-collision phase.  Performing the anti-collision using custom frames could protect against a malicious tag that, for example, violates the standard by sending frames with unsupported lengths. Note that this is only a demonstration tool, which can not handle multiple tags as real life anti-collisions with multiple tags generate "messy" bits which are neither 0 nor 1.

## BUGS

Please report any bugs on the **libnfc** issue tracker at:\
 **https://github.com/nfc-tools/libnfc/issues**

## LICENCE

**libnfc** is licensed under the GNU Lesser General Public License (LGPL), version 3.\
 **libnfc-utils** and **libnfc-examples** are covered by the the BSD 2-Clause license.

## AUTHORS

Roel Verdult \<roel@libnfc.org\>

This manual page was written by Romuald Conty \<romuald@libnfc.org\>. It is licensed under the terms of the GNU GPL (version 2 or later).