An image display may be displayed by augmented reality on a remote controller. This may include identifying an electronic device having playable content, receiving information regarding a locked status of the playable content of the identified electronic device, and displaying, on a screen, an object indicating a locked status when the playable content of the identified electronic device requires a user authentication for playing the content. A user authentication input may be received and a determination may be made whether the received user authentication input matches a previously stored user authentication information. The playable content may be released from the locked status when it is determined that the received user authentication input matches the previously stored user authentication information, and information relating to the released playable content may be displayed.