A key task when building location-based experiences, such as mobile games, is to model locations and define how they are going to be triggered by the underlying technology. This is usually done by using the wireless sensing technology that is available on the desired target device, e.g. GPS, Wi-Fi, Cell ID, Infrared, Bluetooth, NFC, etc. - or a combination of those. This paper argues that it is beneficial to employ a location model that supports deriving locations from different positioning technologies through an abstract interface, so as to be more flexible for technical changes throughout the development phase and, with software patches becoming commonplace, also over the life-cycle of a project. This paper first elaborates on why an abstract notion of location is useful and then presents a concrete model.