Found this from debian archive:
$ apt-cache show zbar-tools
Package: zbar-tools
...
Description: bar code scanner and decoder (utilities)
ZBar is a library for scanning and decoding bar codes from various sources
such as video streams, image files or raw intensity sensors. It supports
EAN-13/UPC-A, UPC-E, EAN-8, Code 128, Code 39, Interleaved 2 of 5 and QR Code.
.
This package contains basic applications for decoding captured bar code images
and using a video4linux device (e.g. webcam) as a bar code scanner.
Homepage:
http://zbar.sourceforge.net/