A multiple device management method and system that executes commands on one controller computer, such as in a data center, to initiate operations on controlled computers containing agent software. An anti-fraud sensing device is able to sense ambient light or generated radiation that passes to the sensing device through the card reader slot. A gate is separated from the channel region by a gate insulator. Further, the frame of the trailer system can have at least one first support member extending from the front end section to said rear end section and at least one second support member extending from said first support member towards one of said side sections.