I'm involved in a project to buy 500+ devices that will be installed in houses and redirect all connected phones/tablets/computers to a captive portal showing a website (just marketing, no login etc).
Since we are giving away these devices (Routers or AP's?) for free the cost need to be as low as possible, yet we don't have much access to the devices after they are installed, so they still need to be reliable and work as expected for the daily wifi users. The houses already have their standard ISP issued router, so looking for the cheapest way to compliment or replace that router with ours.
Would be honored to hear your recommendations!