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With over 150 years of combined experience, you can count on the service technicians at Foster Brothers Security Systems. Our staff has hundreds of hours of factory certified training, and provide customers with the locks and keys, access control devices, and security systems they need and deserve. We work with some of the biggest companies in the nation, and take pride in providing all clients with professional, fast, and economical security solutions.

We proudly serve businesses and industrial sector clients across the Greater San Francisco Bay Area, and provide 24-hour emergency services. With Foster Brothers Security Systems, Silicon Valley Security Starts Here.