The architect and security consultant can integrate security needs through the five stages of design. All the security planning features mentioned are geared toward preventing crime in the built environment. The architect plays a key role in the shaping of the environment and the cues and signals that the building sends to users and visitors. Environmental design can never eliminate all crime, because it does not attack the root causes. Architectural security design may only move crime to other, more vulnerable areas. Design professionals can use three basic strategies for crime prevention through environmental design (CPTED): natural access control, natural surveillance, and territorial reinforcement. The implementation of each of these strategies is carried out through organized methods, mechanical methods, and natural methods. Security design is the systematic process that allows proper design and the effective use of the built environment to reduce the opportunity, incidence, and perception of crime.