Secure External Mail Franking Label Dispenser
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Solution Overview
Problem
Existing mail handling systems with integrated label dispensers require operators to retrieve and apply postal imprints separately, leading to inefficiencies and limitations in label size, and there is a need to ensure the accuracy and security of postal imprints in monetary value.
Innovation Solution
A method and system where an external imprint label dispenser is connected to a postage meter via a communications link, using authentication codes and secret keys for secure data transmission, allowing for secure and accurate printing of postal imprints on a continuous label tape, with initialization and printing stages ensuring data integrity and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If an external label dispenser is used to print postal imprints, then label flexibility and operational efficiency are improved, but the risk of data transmission errors and security issues increases
Solution Approach 1:
A secure communication protocol acts as an intermediary between the postage meter and external label dispenser, establishing encrypted data channels that prevent unauthorized access while enabling efficient label printing operations
Solution Approach 2:
Authentication and encryption key exchange are performed in advance before actual label printing begins, ensuring that security measures are in place before data transmission starts, thus preventing data corruption and unauthorized access
2Reliability
If authentication codes and secret keys are used for secure data transmission, then franking security is guaranteed, but data transfer time increases
Solution Approach 1:
Authentication codes and encryption keys are exchanged during an initialization phase before actual label printing begins. This preliminary security setup allows subsequent data transmissions to proceed quickly without repeated authentication overhead
Solution Approach 2:
The time-consuming authentication and encryption key exchange operations are extracted from the main label printing process and performed separately during initialization, allowing the core printing operation to proceed with minimal security-related delays
3Device complexity
If integrated label dispensers are used, then system simplicity is maintained, but label size flexibility and operational efficiency are limited
Solution Approach 1:
The label dispensing function is segmented from the postage meter into a separate external device. This allows the postage meter to remain simple while the external dispenser provides flexible label size options and continuous tape supply
Solution Approach 2:
The external label dispenser is designed to work with multiple postage meters through standardized communication protocols, providing universal functionality across different systems while maintaining label size flexibility and continuous printing capability
Data Source
AI summary
To print a postal imprint by an external imprint label dispenser connected via a communications link to a postage meter, during an initialization step for initializing the communications link, the postage meter authenticates the imprint label dispenser by exchanging an authentication code and the postage meter securely transmits to the dispenser a predetermined image data set that is signed with a secret key generated during the initialization step on the basis of the authentication code. Then, for each printing cycle, the postage meter computes postal data relating to the mail item that is to be franked, securely transmits the resulting computed data as signed with the secret key to the dispenser, converts the postal data into additional image data, and prints a postal imprint incorporating the additional image data and the predetermined image data on a continuous label tape delivered by the dispenser.