A control apparatus of the present invention includes: a detection unit that detects a position of a terminal apparatus, based on position information which is acquired from plural radio beacons by the terminal apparatus; a memory that stores a history of the position of the terminal apparatus as route information, based on the position detected by the detection unit; and a determination unit that determines whether or not a current position, at which the terminal apparatus is detected, is correct, based on route information of plural terminal apparatuses stored in the memory.