The phrase "access system" refers to a method, mechanism, or process that allows someone to enter or use something. It provides a way for individuals to gain entry or have permission to use a particular resource or area. Full definition
Key Application: I could see this being a huge advance for commercial buildings that use keyless access systems, or even real estate brokers who have keyless entries for their offices. (theworldsbestrealestateagent.com)
It includes document task lists and apps for accessing the system from mobile devices. (realtormag.realtor.org)