Infrared electronic article surveillance system with dynamic passcode protection
First Claim
1. An electronic article surveillance system comprising:
- at least one tag, each tag comprising an attachment mechanism, an on-board power system, a microprocessor, and machine readable instructions encoded for storing a passcode;
at least one tag interface, each tag interface comprising, a processor, and machine readable instructions encoded for storing a passcode;
the means for establishing infrared communication between at least one tag and at least one interface to enable the interchange of information, wherein said passcode stored in said at least one tag is changeable by said at least one tag interface.
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Abstract
An electronic article surveillance system utilizing infrared communication is disclosed wherein added security is obtained by using dynamic passcode protection. The system includes tags, deactivators, a base control system and perhaps one or more remote management stations. Each tag, base station, remote station and deactivator includes an accurate clock generator, a microprocessor, infrared communication capabilities, and machine readable instructions encoded for performing an algorithm for generating multiple passcodes. At a specified time, each active tag possesses a changeable passcode. The base station further includes infrared communication capabilities with an infrared communication path between each tag and each base station, the path enabling interchange of information between each tag and each base station. Each tag replaces the passcode at a specified interval, or at a specified point in time.
53 Citations
28 Claims
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1. An electronic article surveillance system comprising:
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at least one tag, each tag comprising an attachment mechanism, an on-board power system, a microprocessor, and machine readable instructions encoded for storing a passcode; at least one tag interface, each tag interface comprising, a processor, and machine readable instructions encoded for storing a passcode; the means for establishing infrared communication between at least one tag and at least one interface to enable the interchange of information, wherein said passcode stored in said at least one tag is changeable by said at least one tag interface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. An electronic article surveillance system comprising:
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at least one tag, each tag comprising an attachment mechanism, an electronic article surveillance sensor, an alarm generator, an on-board power system, an accurate clock generator, a microprocessor, and machine readable instructions encoded for storing a passcode and for performing an algorithm for generating serial passcodes, and wherein at a specific time each active tag possesses a passcode; at least one tag interface, each tag interface comprising, an accurate clock generator, a processor, and machine readable instructions encoded for storing passcodes and for performing an algorithm for generating serial passcodes; an means for establishing infrared communication between each tag and each tag interface, to enable the interchange of information between each tag and each tag interface;
wherein,said passcode stored in said tag can be changed via said infrared communication means, and can be changed by said microprocessor executing said algorithm periodically. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28)
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Specification