Not all computer systems used by newsagents are the same. Not all being sold today compliant with industry standards. Not all have newsagents using electronic returns. As the maxim says, caveat emptor.
To help newsagents navigate the choice, I have prepared a simple guide for choosing a point of sale system for a newsagency. While I own Tower Systems, the advice stands any test. It is will help you make the best choice for your business. The free guide can be downloaded here.