My goal is to make UI for some device, through website. Device has wifi hotspot running, user can connect to it. Then I want to do "something" that I saw in few airports but have no idea how to do it.
When I use free wifi in the airport, sometimes just after connection to hotspot, webpage was opened somehow automatically on my smartphone, and allowed me to make registration in order to use internet provided through this hotspot.
If I could do the same, it will be great for user, he will not have to enter ip address (or webserver name if I run DNS) to drive this device after connection. The usecase scenario will be: connect to hotspot and proper website will appear on device automatically.
Could you tell me how this can be achieved ?
P.S. This hotspot doesn't provide any internet connection, no masquerade, no routing, just connection to itself. It's running on embedded linux.