Abstract: An inconspicuous system is defined for measuring the absolute luminance of a CRT display and the actual effective luminance as would be measured from the viewer's perspective due to additional reflected ambient illuminance in order to enable closed loop adjustment of the display device and to thereby enable luminance quality control, facilitate image perception, and ascertain fidelity of image presentation conveniently over time.

Abstract: A passive transponder may be encoded with a number or code of up to 64 binary bits and then mounted to virtually any prosthesis implanted in a human, such as a breast implant. After implantation, the transponder's code may be conveniently read with a hand held electromagnetic reader which may merely be brought within proximity of the transponder. The encoded transponder may thus be read in a non-invasive procedure and without the use of any sophisticated or potentially harmful medical equipment or technology such as X-ray. The information encoded in the transponder may correspond to patient demographics and implant data to aid in tracking the implant's manufacturer and use for medical as well as legal reasons.