Abstract:
According to the present invention, a mobile terminal device includes: an operation input section which accepts operations; a memory section which previously stores a list of states of the mobile terminal device during use as locking conditions to determine a state at the time of limiting an operation of the mobile terminal device; a state determining section which generates state information in accordance with a state of the mobile terminal device; and a function limiting section which determines whether the state information meets the locking conditions, and switches the mobile terminal device to a locked state to limit an operation of the operation input section, when the state information is determined to meet the locking conditions.