There is provided an electronic device capable of safely obtaining password information even when a password of an external storage device of any type is forgotten. An electronic device 100 includes an external memory card connection unit 108 connecting a memory card 200 capable of being locked by a card password, a password retention unit 101 retaining the password information including the card password, a device password retention unit 112 retaining a device password of the electronic device 100, an input unit 102 for inputting data, a device setting cancellation unit 111 determining whether or not the device password inputted by the input unit 102 and the device password retained in the device password retention unit 112 match with each other, and a control unit 109 outputting the password information or changing the card password of the external storage device set in the external storage device when the device passwords match with each other as a result of the determination.