SECURITY MEASURES

THE PROBLEM IS TO REMOTELY AND ACCURATELY IDENTIFY PASSENGERBAGGAGE MOVING ON A CONVEYOR TO PERMIT AUTOMATIC HANDLING AND SORTING. READING IS FURTHER COMPLICATED SINCE THE BAGGAGE TAG MUST BE READ AT ANY ORIENTATION AT A DISTANCE OFAPPROXIMATELY 2-3 FEET AND IN CLOSE PROXIMITY TO METAL. IT IS INTENDED TO APPLY ELECTROSTATIC COUPLING AS THE DATA TRANSMISSION MEANS BETWEEN TAG AND READER SINCE UNLIKE MAGNETICS, SONICS, MICROWAVE AND INFRARED IT IS NON DIRECTIONAL. SMALL CAPACITIVE PROBES LOCATED ON THE CONVEYOR WILL RECEIVE DATA FROM THE TAG REGARDLESS OF BAGGAGE ORIENTATION. THE TAG TRANSPONDER CONTAINS A PROVEN LOW POWER CMOS MICROCHIP. THE TAG CONTAINS NO BATTERY BUT RATHER RECEIVES ITS POWER FROM THE READER. THIS PERMITS A LOS COST AND SMALL TAG TO BE MANUFACTURED.