Conventionally, to acquire specific information of a customer, acquisition of the information is only possible by using information such as a bank account number owned by the customer, and further it is not possible to present information beneficial to the customer unless information owned by the customer is acquired from the customer. More specifically, there is a problem in that much time is necessary for a customer or a system operator to input such information.To solve the above-stated problem, the present invention outputs information associated with a customer by using biometric information including a face image. More specifically, biometric information is acquired from a user of a first terminal unit included in a plurality of terminal units, and information associated with an operation made by the user is identified. Then, when the user is going to use a second terminal unit (or when the second terminal unit executes processing of information on the user based on inputs by a third party, etc.), biometric information is acquired from the user, and information that is identified by an operation made on the first terminal unit is retrieved for output by using the biometric information.