Package zbar

Bar code reader

http://zbar.sourceforge.net/

A layered bar code scanning and decoding library. Supports EAN, UPC, Code 128,
Code 39 and Interleaved 2 of 5.
Includes applications for decoding captured bar code images and using a video
device (e. g., webcam) as a bar code scanner.

General Commands
Command Description
zbarcam scan and decode bar codes from a video device
zbarimg scan and decode bar codes from image file(s)