On the fly WiFi pen testing anyone?

Buy a device from here (or you could make your own from parts, it's all open source)

Pretty useful usage of an ESP32 IoT device = Arduino..... they forgot the whole "watch" part, but the next time you're in a 'chosen establishment' (does anyone visit real banks anymore?) you could have a little probe around to see what insecure wifi is hanging around.... or even just annoy your "friends" on the train... "fun for all the family" :-D