A friend owns a few "smart power strips", you connect them to a wifi network by installing a phone app, then when you're ready holding the phone screen up again

A friend owns a few "smart power strips", you connect them to a wifi network by installing a phone app, then when you're ready holding the phone screen up against a light sensor on the strip. The phone screen flashes a bunch to send the network info and whatever else over. It seemed like a non-techie friendly way of doing it while also being cheaper than either adding a bluetooth module and having the phone connect over that first, a central hub, or a little screen + keypad like printers.