Deeplink support for joining networks

[Deep link is] When a clicked link or programmatic request invokes a web URI intent, the Android system tries each of the following actions, in sequential order, until the request succeeds:

  1. Open the user’s preferred app that can handle the URI, if one is designated.
  2. Open the only available app that can handle the URI.
  3. Allow the user to select an app from a dialog.

Source
iOS and Windows have their own versions of this but point being that if you click some link opens up and client with confirmation dialog to join a network.