A wireless printer with chargeable page accounting!?

Question

WiFi

Hello. I missed you a lot and I haven't been here for a long time :)
The essence of the question is this. There is an idea to put printers in the same type of "government institutions" so that visitors can print leaflets for a certain amount of money. We model the situation so that there are no unnecessary questions and everything is as clear as possible:
1. The country is abroad (it will be clear later why it was singled out);
2. Cards are used by everyone and without fear;
3. Gosiki is not against the placement of such points, because they may not, by law or regulation, print for clients;
4. Internet (mobile) is at every point (almost).
Thoughts. Set up a printer with Wi-Fi Direct and a password. Write an application that will scan a printer within reach and, finding it, compare some data (poppy address or grid name or several parameters simultaneously with data from the server). A bank card is connected to the application and when printing, an amount is withdrawn for each fox. In the phone, the application is shown as a printer and conducts everything through itself for accounting.
These are our delusional thoughts. But the essence of the task is clear: a person with a phone prints out his letters and documents on A4 format and pays for it. A person to raise funds to be not long. Everything works autonomously.
If someone tells a friend a solution to this issue or it already exists, I will be extremely grateful and a lot of pluses to your karma.
Thank you friends for reading =)

Answer 1

You take a person, a table and a laptop. You pay him 38 tons per month and he collects tribute from the peasants for printing pages. Otherwise, the peasant can take his laptop, hack your Wi-fi. Reset printer settings and hack it the same way. Print as many as he wants. And the peasants can also steal a printer, a cartridge, break something off for it. And the little man, especially if he is paid 58 per month. It can also fill the printer and wear it, and give the peasant a cap so that he doesn’t break.
In general, the essence is clear, and I hope that such stupid ideas will not appear in the future.