Could be options, but for now, I'm just going to force myself to man up and at least write a little pseudo code, maybe google some copy-pasta for python... There's a ton of code out there for the Pi.Maybe we can use this site to get the app developed if none of the developers want to take on android software.
Specifically, this one might be a good one.
Good points. There are so many directions this can go... How do we make the paper aware tho? Or, how can a device be aware of the paper? Transparently handle the exchange rate?I was thinking restaurants have a table at the register with a glass top. Under it they have posters or whatever. Just put the QR code there. User just needs to scan and then type in the DASH amount. It also could be made into an advertisement for DASH too. Like pay for DASH now and save 2%. Then all they would need is anything that can display a webpage for that DASH address.(Pi, tablet, terminal, whatever). You would also need to add a tip, so it it isn't really that bad to manually enter in the amount.