Abstract: When an application for start of an insurance contract having the contents agreed in advance between a user and an insurance company is made from a portable telephone of the user to an insurance contract computer, the insurance contract computer starts an insurance period and when an application for stop is sent, the insurance period is stopped. An insurance premium is figured out in accordance with a time count of the insurance period. Various kinds of input-troublesome information to be presented to the insurance company at the time of insurance contract are registered in advance in a memory device connected in advance to the insurance contract computer. The portable telephone has the position measuring function and can periodically notify the insurance contract computer of the present position of the portable telephone. The insurance contract computer calculates a moving distance of the user from that position and adjusts the insurance premium.