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

6       nfc-poll - poll first available 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  uses  hardware  polling feature if available (ie. PN532) or
17       switch back to software polling, it will display available  information
18       retrieved from the tag.
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OPTIONS

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

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

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

46       libnfc is licensed under the GNU Lesser General Public License  (LGPL),
47       version 3.
48       libnfc-utils  and  libnfc-examples  are covered by the the BSD 2-Clause
49       license.
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AUTHORS

52       Romuald Conty <romuald@libnfc.org>
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54       This manual page was written by Romuald Conty <romuald@libnfc.org>.  It
55       is licensed under the terms of the GNU GPL (version 2 or later).
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59libnfc                           June 26, 2009                     nfc-poll(1)
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