Safe Door Verification via Cash Box Parameter Comparison
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Solution Overview
Problem
Existing methods for verifying the opening of an automated teller machine safe door are vulnerable to manipulation, allowing unauthorized access and cash withdrawals due to simulated user authentication.
Innovation Solution
A method involving a control unit that reads and compares parameter values from cash boxes in different storage compartments, verifying the actual opening of the safe door by checking for differences in parameter values stored in memory areas, and ensuring secure data transmission via infrared, WLAN, or a bus system, with RFID tags providing unique identification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If door sensor detection is used to verify safe door opening, then authentication speed is improved, but security against manipulation is worsened
Solution Approach 1:
The patent introduces cash boxes with memory areas as intermediary verification elements. Instead of directly trusting the door sensor signal, the system uses the cash box memory areas to store and verify parameter values that confirm actual physical access. This intermediary verification layer prevents manipulation while maintaining authentication speed.
Solution Approach 2:
The system implements feedback by reading parameter values from cash box memory areas and comparing them against expected values. This feedback mechanism confirms whether the door opening was genuine or simulated, allowing the system to validate authentication while maintaining rapid processing through automated comparison.
2Reliability
If parameter verification from cash boxes is implemented, then security against manipulation is improved, but device complexity is worsened
Solution Approach 1:
The cash boxes serve multiple functions: they store cash, contain memory areas with parameter values, and act as verification elements. This multi-functionality reduces overall system complexity by eliminating the need for separate verification devices, as the existing cash box infrastructure is utilized for both storage and authentication purposes.
Solution Approach 2:
The system uses copies of parameter values stored in cash box memory areas for verification purposes. Instead of requiring complex real-time sensing systems, the patent verifies authentication by comparing stored parameter value copies against expected values, significantly simplifying the verification mechanism while maintaining high security.
3Measurement precision
If multiple reading operations are performed for verification, then measurement precision of door opening is improved, but loss of time is worsened
Solution Approach 1:
The parameter values are pre-stored in the cash box memory areas before authentication is needed. This preliminary action allows the verification process to simply read and compare pre-existing values rather than performing complex measurements in real-time, achieving high verification precision without time loss.
Solution Approach 2:
The patent replaces physical inspection mechanisms with electronic data reading and comparison. Instead of using complex mechanical or optical systems to verify door opening, the system uses electronic reads of parameter values from memory areas and compares them digitally, achieving rapid and precise verification simultaneously.
Data Source
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AI summary
The invention relates to a method and a device (100, 200) for the secure verification of the opening of a safe door (34) of a safe (10), in particular a safe door (34) of a safe (10) of an automated teller machine. The safe door (34) and storage compartments (42a to 42d) for cash boxes (12a to 12d) are arranged relative to each other such that the cash boxes (12a to 12d) can only be removed from and inserted into the storage compartments (42a to 42d) when the safe door (34) is open. A control unit (28) verifies an opening of the safe door (34) by checking if cash boxes (12a to 12d) have been removed from the safe (10) and have been inserted into the safe (10) in swapped order compared to a first operating state.