Microsoft Tag is quite impressive. Since most devices now come with built-in cameras, why not use them as a quick scanner?
I can see Microsoft Tag getting incorporated in the healthcare sector very quickly. Think about how quick and easy it would be to scan charts, wrist tags, drugs, etc. All this would be done with a single device (or with devices that are all integrated into the same system).
Have you tried Microsoft Tag? Oh, you'll need a Windows Mobile device. You can create your own tag and post it online.