In Crimology, Access control is known as one of the six teen technique introduced by Ronald V. Clarks on his famous writing about Situational Crime Prevention. Access control is a concept of some symbolic or physical barrier used to select and determine the mobility entry or exit of human. This concept is also potential to be develop on to it is own concept of security system. This research is about how to implement access control concept as a security system concept. Research was conducted at PT "X", an 35 years old foreign investment company, which is it site located at Pasar rebo District, East Jakarta. PT. "X" is a pharmaceutical company, producing gynecological product including oral contraception, which one of their most famous product is Pil KB Lingkaran Biru. Like others modem pharmaceutical company, PT "X" implement high standard of management principle and quality control, to each function under this company organization, including security function. Also like other manufacturing company, the community inside this company characterize by functional relationship, which then lead their employee into some unique relationship which colored by sub unit bonding in company structure, such as Department division or Section. This condition also become basic consideration to determine the mobility and access of each person who has interest to enter any space or room inside these company site. There are four element, choose as basic requirement if access control like to implemented in these company. Those element are administrational, technical, organizational and personal aspect. All this aspect has correlation and supporting as a system. Administrational aspect gives legitimation and power, technical aspect is a supporting tools to make the program runs easier and possible. Organizational aspect describe procedure and mechanism to do the system. Personal aspect lead to share responsibility and function for each unit in the security system. There are still no guarantee that system base on access control concept can or effective in reducing crime in a work place. But At least, access control can be used as a concept to build a security system at other industrial site which might have same characteristic and with same method.