A vehicle mounted device (10) includes a positional information acquisition unit (110) configured to acquire current positional information when a stop is detected, a snapshot selection unit (111) configured to select one of a plurality of snapshots, recorded in a state in which a part of a plurality of functions are executable, on the basis of the acquired current positional information, and a registration unit (112) configured to register the selected snapshot as a snapshot to be read upon the next boot-up.