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Thanks for contacting Modular Security Systems Inc. (MSSI) and the people responsible for the MAC Portals patented turnstile access control system. We've received your submission and someone from our team will be reaching out with more information as soon as possible.

While some businesses are built on thinking outside the box, MSSI’s business is built on reinventing the box; that is, taking what others see as a single-use container and reconfiguring it and giving it multiple, pragmatic purposes for contractors the world over. Learn more below.

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Modular Security Systems Incorporated (MSSI) is leading the way to a more secure world, one turnstile at a time.
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PSG ANNOUNCES 2021 FIRST QUARTER MAJOR AWARD WINNER In honor of hard work and a "can-do" attitude, Portable Solutions Group recognizes Annette "Is there anything else I can...

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Employee Spotlight: Meet Katie Clark Here at Portable Solutions Group (PSG) and its family of companies (MSSI, DropBox Inc., Portable Solutions Manufacturing), we have some...

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