Patent attributes
Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for implementing adaptive geofence alerts are disclosed. In one aspect, a method includes the actions of receiving, by a server, data inputted into a first computing device of a first user. The actions further include, determining, by the server, a future location of a second user and a future time when the second user will likely be at the future location. The actions further include determining, by the server, a second computing device of the second user. The actions further include providing, for output to the second computing device, instructions to provide, to the server, location information of the second computing device based on a location of the second computing device being at least a threshold distance from the future location at the future time.