Abstract: A system for storing and managing personal information comprising at least one mobile communication terminal, and a wristwatch capable of making mutual communication with the mobile communication terminal through short-range wireless communication. The wristwatch is provided with: a memory section that stores in advance user's personal information and also registered authentication information for deciding validity of the mobile communication terminal; and a control section that permits the mobile communication terminal to access the personal information stored in the memory section only when the information for authentication received from the mobile communication terminal matches said registered authentication information stored in the memory section.