nfc-mfultralight(1)

nfc-mfultralight1

Mifare ultralight command line tool

Usage

nfc-mfultralight {r | w DUMP}

Overview

nfc-mfultralight is a MIFARE Ultralight tool that allows one to read or write a tag data to/from a DUMP file.

MIFARE Ultralight tag is one of the most widely used RFID tags for ticketing application. It uses a binary Mifare Dump file (MFD) to store data for all sectors.

Be cautious that some parts of a Ultralight memory can be written only once and some parts are used as lock bits, so please read the tag documentation before experimenting too much!

To set the UID of a special writeable UID card, edit the first 7 bytes of a dump file and then write it back, answering 'Y' to the question 'Write UID bytes?'.

Options

r | w Perform read from ( r ) or write to ( w ) card.

DUMP

MiFare Dump (MFD) used to write (card to MFD) or (MFD to card)

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.

Releases

7 releases since Debian 8 (Jessie); the text changed 1 time.

  1. 8–10
  2. 11–Arch

Bugs

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

Authors

Roel Verdult <[email protected]>,
Romuald Conty <[email protected]>.

This manual page was written by Romuald Conty <[email protected]>. It is licensed under the terms of the GNU GPL (version 2 or later).

From libnfc 1.8.0-4 in Arch Linux 2026-11-01. Parsed by carta from the page's man source.