2011-10-01 14:26:11 +02:00
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.TH nfc-emulate-tag 1 "October 8, 2010" "libnfc" "libnfc's examples"
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2010-10-08 16:45:48 +02:00
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.SH NAME
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nfc-emulate-tag \- Simple tag emulation command line demonstration tool
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.SH SYNOPSIS
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.B nfc-emulate-tag
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.SH DESCRIPTION
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.B nfc-emulate-tag
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2010-10-08 21:24:54 +02:00
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is a simple tag emulation tool that demonstrates how emulation can be done
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2010-10-08 16:45:48 +02:00
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using libnfc.
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2010-10-08 21:24:54 +02:00
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Currently, this tool partially emulates a Mifare Mini: it is detected as
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Mifare Mini but internal MIFARE proprietary commands are not yet implemented.
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2010-10-08 16:45:48 +02:00
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To be able to emulate a target, there are two main parts:
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- communication: handle modulation, anticollision, etc.
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- computation: process commands (input) and produce results (output).
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2010-10-08 21:24:54 +02:00
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This demonstration tool proposes a logical structure to handle communication and
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2010-10-08 16:45:48 +02:00
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a simple function to deal with computation.
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To improve the target capabilities, we can now implement more allowed commands
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in a single function: target_io()
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2010-10-08 21:24:54 +02:00
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Please note that, due to timing issues, it is very difficult to implement an
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ISO14443-4 tag this way: RATS request expects a quick ATS answer. By the way,
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even if you implement another kind of tag, timing issues are often the source of
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2010-10-08 16:45:48 +02:00
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problems like CRC or parity errors.
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2010-10-08 21:24:54 +02:00
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The OmniKey CardMan 5321 is known to be very large on timings and is a good
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choice if you want to experiment with this emulator with a tolerant reader.
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2010-10-08 16:45:48 +02:00
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2010-10-18 17:17:31 +02:00
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.SH IMPORTANT
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ACR122 devices (like touchatag, etc.) can be used by this example (with
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probably timing issue), but if something goes wrong, you will have to
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unplug/replug your device. This is not a
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.B libnfc's
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bug, this problem is due to ACR122's internal MCU in front of NFC chip (PN532).
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2010-10-08 16:45:48 +02:00
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.SH BUGS
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Please report any bugs on the
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.B libnfc
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2011-10-01 14:26:11 +02:00
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issue tracker at:
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.br
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2015-04-30 14:19:03 +02:00
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.BR https://github.com/nfc-tools/libnfc/issues
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2010-10-08 16:45:48 +02:00
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.SH LICENCE
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.B libnfc
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2011-10-01 14:26:11 +02:00
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is licensed under the GNU Lesser General Public License (LGPL), version 3.
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.br
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.B libnfc-utils
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2010-10-08 16:45:48 +02:00
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and
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.B libnfc-examples
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2011-10-01 14:26:11 +02:00
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are covered by the the BSD 2-Clause license.
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2010-10-08 16:45:48 +02:00
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.SH AUTHORS
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Romuald Conty <romuald@libnfc.org>
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.PP
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This manual page was written by Romuald Conty <romuald@libnfc.org>.
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It is licensed under the terms of the GNU GPL (version 2 or later).
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