The invention discloses a method, system and computer program product for making secure payments. The combined open and closed loop method for UL intra-cell PC controls the wireless transmit receive unit transmit power spectral density, PSDTx,. The protective enclosure also includes a stretchable cushion layer over the hard shell that has a sufficient elasticity to conform to the hard shell and provide cushioning to the protective enclosure. The light-exit-angle distribution uniformizing device is provided at the light-exiting face side of the light-guide plate. The method utilizes transfection with helper virus vectors to replace the infection with helper virus used in the conventional method. Light transmissive under-fill material is provided between the substrate and the optical element and between the light transmissive member and the optical element.