Standard communication protocol between the fiscal register and payment terminal helps to automate many activities connected with electronic payments. Most importantly, frequent mistakes taking place when rewriting the amount to be paid from the register to the terminal is omitted.
Moreover, this approach to the register-terminal communication causes that devices used to process electronic payments can be connected to registers on the "plug and play" basis. The register's user does not have to think whether the fiscal register held is conform with this or the other payment terminal.