Abstract: The technology provides for redeeming an offer of a digital content item based on identifying a physical object in image data and verifying a unique identifier associated with the physical object. The unique identifier may be recognized from the physical object by a computer system in image data from a camera. The unique identifier is typically attached to or part of the physical object. For example, the unique identifier may be a graphic design integral to a physical object like an article of clothing, jewelry or a book cover. Furthermore, a user may be identified as being associated with the physical object. In some examples, the user having bodily contact with, for example wearing or holding, the physical object is deemed the user associated with the physical object for redemption of the digital content item.