Dear Reader, it has come to our attention that, although the QR Scanning Codes that we generate for our customers' advertisement are 100% operational, some types of scanning software can have difficulties in reading those codes. The reason - we found out - is that there are major differences in scanning software quality. We therefore suggest that you download your compatible scanning software from www.getscanlife.com, even if you already have a build-in software application on your mobile or tablet. Our experience with this provider is that their software runs very well on all types of systems. The Spirit Team.