Home Products About MSSI Resources Contact Us Modular Security Systems, Inc. SecuredByMAC.com is the official website of Modular Security Systems, Inc. (MSSI), a shipping container modification company that designs, engineers, and manufactures a wide array of products to enhance perimeter security and help create a safer, more secure world. MAC PORTALS Modular Access Control (MAC) Portals SEE ALL MAC PRODUCTS MAC LITES Specifically Designed for Commercial Construction Jobsite Rental Needs SEE ALL MAC LITE PRODUCTS GUARDHOUSES Climate-Controlled Ground Level Offices SEE ALL GUARDHOUSE PRODUCTS VAC PORTALS Vehicle Access Control (VAC) Portals SEE ALL VAC PRODUCTS MAC SAFE-T-CHECK™ Modular Turnstile, Access Control, & Thermal Screening SEE ALL MAC SAFE-T-CHECK PRODUCTS OPTIONAL ACCESS CONTROL PACKAGES AVAILABLE Our company offers optional access control packages that can be installed into your product. Not sure whether or not an access control package is right for you and your company? Visit our Access Control Systems 101 page to learn more about what access control is, its benefits, and the options for integration with MSSI products. LEARN MORE MSSI COMPANY OVERVIEW Modular Security Systems Incorporated (MSSI) is leading the way to a more secure world, one turnstile at a time. WATCH OUR VIDEO READ OUR RECENT BLOG POSTS VIEW TURNSTILE BLOG PSG Thanksgiving By Mackenzie Hinman on November 19, 2021 PSG Thanksgiving Yesterday, Portable Solutions Group and its family of companies carried on the tradition of providing our employees with the gift of a turkey for... CONTINUE READING Deer Hunting and Heavy Construction: Do They Have a Connection? By Robert Slagel on November 18, 2021 By Robert Slagel President/CEO, Portable Solutions Group Do deer hunting and heavy construction have a connection? I believe the answer to this question is yes. Until... CONTINUE READING MSSI Collaborates with SkillSignal to Introduce the First Data-Powered Turnstile By Mackenzie Hinman on November 18, 2021 Robert Slagel, President/CEO of Modular Security Systems Inc. says "There is no question that major construction and maintenance projects in the US are finally entering the... CONTINUE READING Trusted by hundreds of brands around the world CONTACT MSSI Have any questions? We can help you find the right product for your needs. Project Location Industry* Refineries Chemical Processing Power Nuclear Construction Data Centers Health Care Education Other SecuredByMAC DropBox Inc 740.532.7822 PRODUCTS All Products MAC Portals MAC Lite Vehicle Access Control Guardhouses MAC Safe-T-Check™ INFORMATION Turnstile Blog About MSSI Contact MSSI SUBSCRIBE TO THE TURNSTILE BLOG © 2021 Modular Security Systems Inc.