Methods, computer readable storage medium, and systems for mobile devices to locate persons or places are described. In a feature, the invention is a method implemented in a server for providing beaconing sequences to the mobile devices for location sharing. In a feature, the invention is a server executing a method of locating a user using a beaconing mobile device. In a feature, the invention is a non-transitory computer readable medium on a server that encodes a program to execute a method on a first mobile device that determine directions and/or distance between the first mobile device and a second mobile device. In a feature, the invention is a server executing a method to remember a place on a mobile device.