Access Control & Integrated Security Systems - Keri Systems, Keri Systems is an international access control solutions provider that helps installers and end-users design custom solutions that monitor and manage access to facilities. Work with Keri and leverage our 30 years of experience crafting successful access control installations across industries, and around the globe. Keri manufactures all of the necessary hardware for even the largest security installations and offers two management software solutions. The Keri Systems platform can be integrated.