Pibrary Invitation problem: Self checkout machine

http://learninprogress.blogspot.com/2015_12_01_archive.html

Glen Walker of Selwyn Libraries demonstrates how he put together a self-checkout machine using spare computer parts from his library. He estimates he saved the library 30,000 dollars (about 22K in the US). He said he freed up money for other library resources such as staff. He used code written by Eric Melton from the 

Kirkendall Public Library.

Helpful for translating it for a Raspberry Pi, Saurab Kumar published how he used a Raspberry Pi to scan barcodes.

Could we build a self checkout station with the Raspberry Pi that underfunded libraries could use to improve service or reallocate money for more direct services? Help us today and join the Pibrary Challenge.

Here is another version from the USA.