Hitch Demon App - for iPhone
"Hitch Demon App" required a hardware device named, "Hitch Demon". Hitch Demon is a Wi-Fi enabled mobile mini projector mounted at the hitch of the car/truck. Hitch Demon serves as an WiFi Access Point, so that iPhone can connect to it, and by the Hitch Demon App, it can send over images to the projectors for projections wirelessly. The App can also control the Hitch Demon device such as to kick-start/stop image slide show, adjust slide show intervals, projection brightness controls...etc.