Rotating Media Transfer Device for Secure SST Access
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Solution Overview
Problem
Self-Service Terminals, such as ATMs, face security vulnerabilities due to exposed cash trays and inadequate shutter mechanisms, making them susceptible to fraudulent attacks and tampering, especially during prolonged access attempts.
Innovation Solution
A Self-Service Terminal design featuring a rotatable media transfer device with tamper-resistant materials, where the outer body portion aligns with the fascia panel aperture to secure media access, using clamping elements to manage media dispensing and depositing, and a secure card reader interface to prevent skimmer devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a traditional open cash tray or simple shutter mechanism is used, then ease of operation is improved, but security against fraudulent attacks and tampering deteriorates
Solution Approach 1:
The patent implements a dynamic shutter mechanism that rotates between open and closed positions based on operational state. The shutter is connected to the dispensing mechanism through a linkage system, allowing it to automatically open when media is being dispensed and close when idle, resolving the contradiction between ease of operation and security by making the security state dynamic rather than static
Solution Approach 2:
The shutter mechanism is nested within the housing structure, with the shutter panel fitting into a recess in the housing. The linkage mechanism is also nested within the housing, allowing compact integration while maintaining the security function. This nesting approach allows the complex security mechanism to be integrated without compromising ease of operation
2Reliability
If the shutter mechanism is kept closed to prevent intrusion, then security is improved, but access to media during normal operation deteriorates
Solution Approach 1:
The shutter mechanism dynamically transitions between closed (secure) and open (accessible) states based on operational requirements. During normal media dispensing operations, the shutter opens to allow access, while during idle periods or detected intrusions, it closes to secure the media. This dynamic behavior resolves the contradiction by making the system adaptive to different operational states
Solution Approach 2:
The shutter opens in advance before media dispensing begins and remains open throughout the dispensing process. This preliminary action ensures that when a user needs to access media, the shutter is already open and ready, eliminating delays and ensuring smooth operation while maintaining security when not in use
3Ease of operation
If the aperture remains open for prolonged access attempts, then ease of operation is improved, but vulnerability to concerted intrusion attacks worsens
Solution Approach 1:
The system incorporates sensors that detect intrusion attempts and provide feedback to the control mechanism. When intrusion is detected, the sensor signal triggers the shutter to close automatically, cutting off access to the media. This feedback loop resolves the contradiction by allowing normal prolonged access when legitimate while automatically securing against detected intrusion attempts
Solution Approach 2:
The shutter mechanism is designed to close automatically when intrusion is detected, applying counter-action to prevent the harmful effect of intrusion. The tamper-resistant materials and robust shutter design provide preliminary protection against explosive attacks and other forms of tampering, resolving the contradiction by preparing the security response in advance rather than reacting after intrusion occurs
Data Source
AI summary
A Self-Service Terminal (SST) and a method of selectively dispensing or depositing items of media are disclosed. The SST includes a fascia panel comprising a panel portion having a circular arc-shaped cross-section and at least one panel aperture. The SST also includes at least one media transfer device comprising an outer body portion having a circular arc-shaped cross-section, proximate to and spaced apart from the panel portion, and at least one body aperture. The body portion is rotatable with respect to the curved panel portion to selectively reveal the body aperture through the panel aperture.