provided are techniques for the placement of a code on an object that does not interfere and is not displayed in a captured visual image of the object . also provided are techniques for capturing a first image of an object in the visual light spectrum ; capturing a second image of the object in a non - visual light spectrum ; extracting metadata , stored in the non - visual light spectrum corresponding to the object from the second image : and storing the first image in conjunction with the metadata . also provided are techniques for storing the metadata in conjunction with the object in the non - visual light spectrum , wherein the metadata is stored in a quick response code or a bar code and the non - visible light spectrum is ultraviolet light or infrared light .