Most captive portals for wifi guide you to an http address; in hotels, you log in, and the wifi starts working.
This system is a different beast; we force clients to see the marketing first, what the location that they log in to has to offer, flyers, videos, banners, promos, and deals. Only then, after seeing, the client has to log in and provide their database to be able to use free wifi. On test for the last 1 year, and restaurants, clubs, salons and medical centres love it,