Kastle Systems

Kastle Systems is a premier managed security service company in San Francisco, CA. Leading the security industry since 1972, we provide state-of-the-art security solutions for clients across California, the nation, and the world protecting more than 2 million people across 10,000+ locations globally. We offer a suite of integrated solutions including access control, video surveillance, visitor management and identity management, as well as mobile security applications – all integrated on an open, standards-based platform and supported by a team of experts 24x7x365.