I’m sorry, it was more of a brainstorming question rather than a real one about this particular product, although, it is how I would plan to use this product.
FYI: I did some research on the subject, and you could allow the “host” to enable the wifi hotspot, and then allow other devices to connect to it for Android, on IOS 7, it is much easier as you can use Multi-Peer. The idea is to find players, in the area, to have “card battles” with.
A guess another good way would be to have a small program in the background that records location data every X minutes. If two devices are with Y range, then send a notification to both parties. At this point, then they meet and decide who will be the host player, and then, the host launches the game, the Match server sends the both the host and client a unique WiFi password. The host game would then store the previous password upon launching as host, the game enables the WiFi hotspot, changes password, and then launches the game server. Yea… At the end of the game, the game then resets the WiFi password back to the original password.
Of course, nothing in blueprints will do this, other than the location data 