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nfc-poll(1)		       libnfc's	examples		   nfc-poll(1)

NAME
       nfc-poll	- poll first available NFC target

SYNOPSIS
       nfc-poll

DESCRIPTION
       nfc-poll	 is  a utility for polling any available target	(tags but also
       NFCIP targets) using ISO14443-A,	FeliCa,	Jewel and  ISO14443-B  modula-
       tions.

       This  tool  uses	 hardware  polling feature if available	(ie. PN532) or
       switch back to software polling,	it will	display	available  information
       retrieved from the tag.

OPTIONS
       -v     Tells  nfc-poll  to  be verbose and display detailed information
	      about the	targets	shown.	This includes SAK decoding and finger-
	      printing is available.

IMPORTANT
       There are some well-know	limits with this example:
	-  Even	 with  NDO_AUTO_14443_4A  enabled (default), nfc-poll can miss
       ATS. That due to	the way	the PN532 use to poll for ISO14443 type	A,  it
       will  attempt to	find ISO14443-4-only targets, then ISO14443-3. If your
       ISO14443-4 target is present when PN532 looks for ISO14443-4-only,  ATS
       will   be  retrieved.  But  if  your  target  enter  the	 field	during
       ISO14443-3, RATS	will not be sent and ATS not retrieved.
	- nfc-poll can show up only one	card while two are  in	field.	That's
       due, again, to the way the PN532	poll for targets. It will stop polling
       when one	modulation got a result, so if	you  have,  for	 example,  one
       ISO14443-3  (eg.	Mifare Ultralight) and one ISO14443-4 (eg. Mifare DES-
       Fire), it will probably return only the ISO14443-4.

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.

AUTHORS
       Romuald Conty <romuald@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).

libnfc				 June 26, 2009			   nfc-poll(1)

NAME | SYNOPSIS | DESCRIPTION | OPTIONS | IMPORTANT | BUGS | LICENCE | AUTHORS

Want to link to this manual page? Use this URL:
<https://www.freebsd.org/cgi/man.cgi?query=nfc-poll&sektion=1&manpath=FreeBSD+12.0-RELEASE+and+Ports>

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