Patent ID: 7450015

Claim:
A system for ensuring location of an individual or apparatus within a designated area, comprising: a portable transmitter for removably secured to said individual or apparatus; a proximity sensor located in a predefined area of said designated area for detecting said portable transmitter if said portable transmitter is located within a predefined range of said proximity sensor; an optical sensor for determining if the individual or apparatus is located within the predefined area of said designated area, wherein said optical sensor receives an optical signal from an optical signal transmitter if the individual or apparatus is not within said predefined area and wherein the predefined area is an area before an entry/exit point defined by a space between the optical sensor and the optical signal transmitter; and a monitoring station for performing an event if said optical sensor does not receive said optical signal and said portable transmitter is detected by said proximity sensor wherein said monitoring station continually monitors said optical sensor and said proximity sensor independently; wherein said event is sounding of an alarm.