How to make sms authorization for wifi on mikrotik equipment?

Question

WiFi

Greetings colleagues!
I was puzzled by the creation of a wifi hotspot in the hotel complex for guests, but in order not to break the law, client authorization by SMS is required. There are a lot of options for someone who makes their own hands using usb modems, someone uses third-party services of "programmer students", there are also services from Megafon and Beeline. What to choose from this, my head is spinning, someone takes a subscriber, someone for SMS.
Hotel complex of 6 buildings + restaurant separate building, people in the season from 50 to 300 people, out of season 10-30 people. The mesh was created on Mikrotik rb951ui-2hnd equipment, about 20 pieces, all this works on CAPsMAN v2. Now the network is simply password-protected and the guest is given a password upon check-in (not an individual one).
The main question is what is better than your own system or service (pros and cons)?
Selection criteria: collection of a base of phones and the ability to change the design of the authorization page for the needs of the marketing department, and, in fact, compliance with the law, fault tolerance and 100% SMS delivery.
In general who faced the given task share experience.
Thanks in advance!

Answer 1

Try CiAWiFi.RU
A large list of equipment is supported . Full compliance with the legislation on WiFi in the Russian Federation , you can choose for yourself - pay you a subscription fee, or pay for SMS, there is also a free tariff , but there will be third-party advertising.