Fiscal Printer Unit is referred to a mode of operation of NGCR(YNÖKC) which allows third party sales applications to "print" fiscal receipts and get payment information and reports by sending a set of commands to the device.

These commands are transmitted via a secure encrypted protocol called GMP3. GMP3 is the underlying message transport protocol completely hidden from the developer(you). We provide wrapper libraries for various platforms that make it easy for developers to interface with GMP3 protocol in a more familiar, easy to use way.

Initially libraries for .NET and Java platforms are provided with examples.

Happy coding!