Modular Security Systems Inc. and the Patented Modular Access Control (MAC) Portal have been popping up at major industrial construction and commerial construction projects around the United States and abroad since the company was founded in 2004. By patenting the concept of "turnstiles in a container" MSSI has secured the process of delivering portable perimeter security solutions in a turn key ready unit. With and without optional guard offices these access control turnstile systems have revolutionized the way workers on major projects "clock in/out" for the day. By integrating full height high security turnstiles and access control technologies that can connect with pre-existing access control systems on site these Patented MAC Portalcan secure the perimeter of any major industrial or commercial construction project and provide minutue to minute reporting capabilities.