WiFi to the establishment via 4G modem?

Question

WiFi

Hello everyone, a problem has arisen:
We want to give customers the opportunity to surf the Internet for 15 minutes when buying coffee (we have a "coffee to go" point, only a barista has Internet through a 4G modem plugged into a laptop), so here's what you need:
- Generation of disposable passwords
- When you connect, a page pops up where these same passwords must be entered - Well
, the system itself gives access only for 15 minutes . Is it possible to somehow adapt this thing to 4G? Or are there some "Regular" routers and special software that will help us? Thank you all in advance for your reply :)

Answer 1

There are routers with LTE. A SIM card is inserted into them. Be sure to take a router not from a telecom operator, because very often they are tied to it.
For a clear selection of a piece of iron, you need to understand the number of connections.
It is better to print the authorization code on the cash receipt. So there will be an associative series: bought - got the Internet.

Answer 2

Yes.
1) There are routers with the ability to connect USB 4G modems to them. As there to organize access on 15, it is necessary to think.
2) Or take a new budget PC, insert a modem and WiFi into it. Such a solution is much easier to maintain and customize for business purposes. More reliable, more stable.

Answer 3

Можно сделать с помощью любого Mikrotik'a с USB выводом. У них есть режим работы hotspot.
Правда у меня для вас плохие новости - по текущим законам вы должны спрашивать у пользователей номер мобилы и получать подтверждение по смс.