Here is a freaky not-really-useful kind of thing, this hat can detect WiFi hotspots! Not only that, it actually displays the strength of the connection! Although I admire the idea, but imagine yourself walking around with one of these hats and people start to read your connection strength!
I think such a detector must be on your watch not on a hat, as you can’t just keep taking your hat off to check for connection, and your head will be simply a connection meter for the public.
People will keep staring at you to check the connection