Abstract: A system and methods using applications for entry and exit from registered locations, where a registered location has an associated geo-fence of any size or shape. A registered location may be mobile or stationary. An internet-connected device running an app transmits the current geographic location of the device, and a remote processing center executes a default action when finding correspondence between the geo-fence of a registered location and the current geographic information of an end user's device, and in one embodiment, the default action may be to enter and pay for parking at a registered location.