zbar: ZBar (GNU/Linux Bar Codes Reader)
zbar:
zbar: ZBar is an open source  software  suite for reading bar codes from
zbar: various  sources, such  as  video  streams, image  files  and  raw
zbar: intensity sensors. It supports many popular  symbologies (types of
zbar: bar codes) including EAN-13/UPC-A, UPC-E, EAN-8, Code 128, Code 39
zbar: Interleaved 2 of 5 and QR Code.
zbar:
zbar:
zbar:
zbar: