We install our routers and antennas in hot spot locations. The back haul is from a telco provider, paid. We direct the users to a 20-second advertisement prior getting the use of internet browsing.
We get paid from those who place ads in our system. The hot spot locations allow us to install our system and we pay the telco for the line.
How can we make it so our users get a 20-second advertisement on login and then have the ads to pop up after every say 30 mins of usage by end users? Since its free for users on Wi-Fi, the users use our system. But we are unable to restrict the users during the 20-second ads as the address bar is displayed, so users can go to internet browsing.