I'm from Poland. If your system had connections to fiscal printers then there is sure one would have a great deal of interest. Many manufacturers of such printers provide a description of the protocol and loan the printer for free for testing with new software. I can imagine that on the basis of libraries made available by the manufacturer of printer printers, you can write a mododule (for example, for a fee) - I declare my help, for example in the area of borrowing a printer and testing with software. Currently, your software in EU countries where there is a requirement to use cash regist