Car Park Beam AR is an Augmented Reality App. You can use it to place an Augmented Reality beam where you parked your car. You can then view the beam through a camera feed in the App. The App also allows you to see placed beams via a Geo Radar widget.
This app uses Global Positioning Satellites (GPS) to obtain your current position. It will work well when parking outside, but not so well if you are parking underground or in a multi-storey car park.