What is necessary to use a self-written cash register (automated system) in terms of the legislation of the Russian Federation?

Question

Automation

Hello!
There is a small chain of coffee houses in Moscow, at the moment the coffee houses use solutions from the iiko company. It is possible to develop a custom solution that will satisfy all the necessary needs for a small coffee shop.
Interested in legal issues, how to start using a self-written solution in business?
What is needed in order to be able to connect fiscal registrars (stroke, atoll, etc.)?
And also, if you do not take into account the cost of development, then how economically feasible is it to register / certify your software solution?

Answer 1

Why should you certify your software?
Write your own software (ERP like iko, 1s, Rkeeper, etc.) and implement technical integration in it. information exchange protocol with a certified cash desk/fiscal registrar.

Answer 2

What are the problems, open 54-FZ dated 05/22/2003 in the latest edition and read
Then:
1. Develop your electronic cash desk
2. Certify it and enter it into the register
3. Conclude an agreement with the fiscal data operator and implement data exchange
4. Register your email .cash at the tax office
5. You use it
That's all,
but I think the costs for paragraphs 1 and 2 will be equal to the cost of all your coffee houses, and possibly more.
I apologize for the sarcasm, but seriously, it's better to do as @boss_lexa suggests
i.e. purchase a cash register (or online cash register) with some exchange protocol and simply add your interface

Answer 3

Isn't it easier to put a cloud system in a coffee shop? For example, Quick Resto , a very convenient automation program with a lot of features, is much more convenient for the price than aiko or keeper, because. no need to install and maintain the server.
Of course, you can write your own system, but where is the confidence that everything will work as it should? Specialists in automation companies do this not for 5, 10 minutes or even a year, well, if we talk about a program on which you can work.