Abstract: In an embodiment, an access terminal (AT) measures and reports location information when positioned at a user-defined place associated with a geofence to a server, and the server updates a place fingerprint configured to identify the user-defined place based on the reported location information. In another embodiment, the AT or the server obtains location information associated with a set of user-defined places that are identifiable by a set of place fingerprints, determines whether a location event has occurred and updates a behavior model for the access terminal based on the determination. In another embodiment, the AT receives a request for its location and evaluates a set of factors (e.g., the behavior model, etc.) to determine whether to acquire the AT's location with a high power-consumption positioning procedure (e.g., GPS).