Abstract:
A wearable display device including a frame unit configured to be worn on a head of a user; a display unit configured to display an image to at least one of left and right eyes of the user; a camera configured to acquire a scene viewed by the user as an image; and a controller configured to control the camera to obtain an image of billing information viewed by the user, display a progress screen of a payment process associated with the billing information photographed on the display unit, receive a payment authorization input of the user for paying an amount included in the billing information, and complete payment for the amount included in the billing information when the received payment authorization input successfully matches a predefined payment authorization input.