If anyone has where could I read more? In my imagination it would work like this. I upload some documents I need to print. I go to a convenience store where there is a printer. With my smartphone I scan a QR code on the printer, I print what I want to print, I pay over the Internet. I get going to where I am supposed to be. If the printer is occupied I go to the next convenience store a few block away. I did a quick Google search but I didn't find much info.
https://encrypted.google.com/search?q=printing+as+a+service