nfc-relay-picc(1) NFC Utilities nfc-relay-picc(1)NAMEnfc-relay-picc - Relay demonstration tool for ISO14443-4
SYNOPSISnfc-relay-piccDESCRIPTIONnfc-relay-picc
This tool requires two NFC devices. One device (configured as target)
will emulate an ISO/IEC 14443-4 type A tag, while the second device
(configured as initiator) will act as a reader. The genuine tag can be
placed on the second device (initiator) and the tag emulator (target)
can be placed close to the original reader. All communication is now
relayed and shown in the screen on real-time.
tag <---> initiator (relay) <---> target (relay) <---> original reader
OPTIONS-h
Help
List options
-q
Quiet mode
Suppress printing of relayed data (improves timing)
-t
Target mode only (to be used on reader side)
Commands are sent to file descriptor 4
Responses are read from file descriptor 3
-i
Initiator mode only (to be used on tag side)
Commands are read from file descriptor 3
Responses are sent to file descriptor 4
-n N
Adds a waiting time of N seconds (integer) in the loop
EXAMPLES
Basic usage:
nfc-relay-picc
Remote relay over TCP/IP:
socat
TCP-LISTEN:port,reuseaddr
"EXEC:nfc-relay-picc -i,fdin=3,fdout=4"
socat
TCP:remotehost:port
"EXEC:nfc-relay-picc -t,fdin=3,fdout=4"
NOTES
There are some differences with nfc-relay:
This example only works with PN532 because it relies on its internal
handling of ISO14443-4 specificities.
Thanks to this internal handling & injection of WTX frames, this exam‐
ple works on readers very strict on timing.
BUGS
Please report any bugs on the libnfc issue tracker at:
http://code.google.com/p/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.
This manual page is licensed under the terms of the GNU GPL (version 2
or later).
libnfc October 12, 2010 nfc-relay-picc(1)