Biblio::RFID::RFID501(3pm)

NAME
Biblio::RFID::RFID501 - RFID Standard for Libraries

DESCRIPTION
This module tries to decode tag format as described in document

  RFID 501: RFID Standards for Libraries

<http://solutions.3m.com/wps/portal/3M/en_US/3MLibrarySystems/Home/Resources/CaseStudiesAndWhitePapers/RFID501/>

Goal is to be compatible with existing 3M Alphanumeric tag format which, as far as I know, isn't specificed anywhere. My documentation about this format is available at

<http://saturn.ffzg.hr/rot13/index.cgi?hitchhikers_guide_to_rfid>

Data model

  3M Alphanumeric tag
 0   04 is 00 tt   i [4 bit] = number of item in set    [1 .. i .. s]
                   s [4 bit] = total items in set
                   tt [8 bit] = item type

 1   dd dd dd dd   dd [16 bytes] = barcode data
 2   dd dd dd dd
 3   dd dd dd dd
 4   dd dd dd dd

 5   bb bl ll ll   b [12 bit] = branch [unsigned]
                   l [20 bit] = library [unsigned]

 6   cc cc cc cc   c [32 bit] = custom signed integer

  3M Manufacturing Blank
 0   55 55 55 55
 1   55 55 55 55
 2   55 55 55 55
 3   55 55 55 55
 4   55 55 55 55
 5   55 55 55 55
 6   00 00 00 00

  Generic blank
 0   00 00 00 00
 1   00 00 00 00
 2   00 00 00 00

Security
AFI byte on RFID tag is used for security.

In my case, we have RFID door which can only read AFI bytes from tag and issue alarm sound or ignore it depending on value of byte.

0xD7 214
    secured item (door will beep)

0xDA 218
    unsecured (door will ignore it)

METHODS

  to_hash
  my $hash = Biblio::RFID::Decode::RFID501->to_hash( $bytes );

  my $hash = Biblio::RFID::Decode::RFID501->to_hash( [ 'blk1', 'blk2', ... , 'blk7' ] );

  from_hash
  my $blocks = Biblio::RFID::Decode::RFID->from_hash({ content => "1301234567" });

  blank_3m

  blank
  my $blocks = Biblio::RFID::Decode::RFID->blank;