1NFC-POLL(1)                 General Commands Manual                NFC-POLL(1)
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NAME

6       nfc-poll - Poll for one NFC target
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SYNOPSIS

9       nfc-poll
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DESCRIPTION

12       nfc-poll  is  a utility for polling any available target (tags but also
13       NFCIP targets) using ISO14443-A, FeliCa, Jewel and  ISO14443-B  modula‐
14       tions.
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16       This  tool  relies  on a hardware polling feature of the PN532, it will
17       display available information retrieved from the tag.
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IMPORTANT

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

35       Please   report  any  bugs  on  the  libnfc  forum  at  http://www.lib‐
36       nfc.org/community/.
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LICENCE

39       libnfc and libnfc-examples are covered by the GNU Lesser General Public
40       License (LGPL), version 3.
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AUTHORS

43       Romuald Conty <romuald@libnfc.org>
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45       This manual page was written by Romuald Conty <romuald@libnfc.org>.  It
46       is licensed under the terms of the GNU GPL (version 2 or later).
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50                                 June 26, 2009                     NFC-POLL(1)
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