Can Minecraft run on Windows POSReady 7 Supermarket tills?

You would probably be violating the supermarket's usage policy by running games on their POS tills. Remember, it's not your computer! You have absolutely NO rights to use that computer in any manner other than the store designates!

Besides, if you have access to the till, it means you work there, and if they aren't paying you to play games! Now get back to work!

Aside from the other posters… Many POS devices are locked down and nothing can be changed or installed…