Security and safety are two intertwined terms. It is a common belief that
when a place or system is secure, it is safe. This paper shows a means of
integrating three devices for physical intrusion detection. This paper thus
suggests a means of increasing the level of security in an enclosed area with
the use three of the four security layers necessary for optimum security. This
paper intends to show that a system with more than one security device in place
tends to prevent unauthorized access.