Patent ID: 8704637

Claim:
An information management apparatus, comprising: a communication unit capable of transmitting and receiving a signal; a storage unit that stores a threshold value; a history information registration unit that: when first history information comprising position information indicating a position of another apparatus at a predetermined time and first time information indicating the predetermined time is received via the communication unit, registers the first history information with the storage unit; and when second history information comprising base station identification information and second time information indicating an acquisition time of the base station identification information is received via the communication unit, registers the second history information with the storage unit; a registration determination unit that determines whether a difference between the first time information and the second time information is less than the threshold value stored in the storage unit; and a base station information registration unit that, when the difference is less than the threshold value, registers: at least a portion of position information with the storage unit; and at least a portion of the base station identification information as base station information with the storage unit.