Image data comprising an image of an environment is received from a mobile video device located at the environment. An image of a marker is extracted from the received image for use in identifying the location of the mobile video device. A location associated with the marker is extracted from a database and the extracted location is sent as the location of the mobile video device. Also received is a request for information about an item in the environment that is of interest to a user of the mobile video device. A location in the environment associated with the item of interest is identified, and the information indicating the location of the item is transmitted to the mobile device for display within an image of the environment on the mobile video device. The item of interest may be displayed as an augmented reality within an image of the environment.