This invention relates to a fastener system, in particular a system for improving computer room security, that reduces energy consumption. This invention provides a fastener system comprising at least one fastener for fastening a first element to a second element, the at least one fastener having a sensor to determine status of that fastener; a trigger box having an LED panel; a junction box capable of receiving and relaying authorization access; and an IP-connected control appliance with relay input/output for access control applications. This invention is particularly useful within server racks.