Object tracking for head-mounted devices

A head-mounted device can be operated with another device and/or object for which information is gathered to facilitate visual display of a representation thereof. An object can be provided with indicators that allow a head-mounted device to determine both an identity and a characteristic (e.g., position, orientation, distance, etc.) of the object. Additionally or alternatively, the head-mounted device can determine both an identity and a characteristic (e.g., position, orientation, distance, etc.) of an electronic device attached to an object for producing a virtual representation of the object. Additionally or alternatively, the head-mounted device can receive data from an electronic device attached to an object for producing a virtual representation of the object. The virtual representation of the object can resemble the physical object, even where the object itself is not independently analyzed.