Pwnagotchi is a small standalone portable homebrew device with bettercap on it that analyses the Wifi environment. It stores all the WPA key material found. The device can be built with a Raspberry Pi Zero W, e-paper HAT, SD card with software and a power supply/battery. The name Pwnagotchi is made up of the leetspeak word pwned and Tamagotchi. The device is a kind of Tamagotchi for Wifi networks: it becomes happy when it is fed with new Wifi networks. And there is more. Peter shows a Pwnagotchi and tells about the possibilities.