| CPC G06K 19/07707 (2013.01) [G06K 19/0707 (2013.01); G06K 19/0723 (2013.01); G06Q 30/0623 (2013.01); G08B 13/2417 (2013.01)] | 14 Claims |

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1. A method for operating a security tag, comprising:
receiving, by a first external interface of the security tag, first item related information from a first external device;
storing, by the first external interface, the received first item related information in a first dedicated memory store of the first external interface;
updating, by a microcontroller of the security tag, a second dedicated memory store of a second external interface of the security tag with the received first item related information;
receiving, by the second external interface, second item related information from a second external device;
storing, by the second external interface, the received second item related information in the second dedicated memory store of the second external interface; and
updating, by the microcontroller based on comparing the second item related information with the first item related information stored in the first dedicated memory store of the first external interface, the first dedicated memory store of the first external interface with the received second item related information.
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