Electronic key and memethods for electronic for transmitting the electronic key and thereof

Disclosed is an electronic key transmission method of a device. The electronic key transmission method of a device according to an embodiment of the present invention includes the steps of: receiving a user command to provide an electronic key for another device; providing a UI to set the usage conditions of the electronic key upon receiving the user command; and transmitting the usage condition data set via the UI with the electronic key to another device. [Reference numerals] (110) Display unit; (120) Communication unit; (130) User interface unit; (140) Storage unit; (150) Control unit