Dynamic ATM Touch Screen Input Layout for PIN Security
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Solution Overview
Problem
ATM transactions are vulnerable to unauthorized access due to skimming devices and hidden cameras that can capture and record PINs, making it difficult to protect banking customers' confidential information.
Innovation Solution
Implementing a dynamic display of keys on ATMs that randomizes the layout and position of numeric and functional inputs, making it harder for observers to map hand movements to specific inputs, and using touch screens or mechanical keypads with transparent buttons to enhance security.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a fixed and uniform layout of numeric inputs is used on the ATM, then ease of operation is improved, but security is worsened because observers can map hand movements to specific inputs
Solution Approach 1:
The patent applies dynamics by making the layout of numeric inputs changeable rather than fixed. The system dynamically rearranges the positions of numeric inputs between different uses, preventing observers from mapping hand movements to specific inputs while maintaining ease of operation through clear display and touch interface
2Object-affected harmful factors
If transparent buttons are used on the keypad, then security is improved by preventing hidden camera capture, but manufacturing precision requirements increase
Solution Approach 1:
The patent applies color changes by using transparent or translucent buttons that allow light to pass through, making it difficult for hidden cameras to capture clear images of the inputs. The transparency property is utilized to prevent unauthorized recording while maintaining the functional appearance of the buttons
3Object-affected harmful factors
If the positions of numeric inputs are randomized, then security is improved, but ease of operation is worsened due to increased complexity
Solution Approach 1:
The system dynamically rearranges numeric input positions between different uses rather than using a completely random static layout. This dynamic repositioning maintains security by preventing observation-based attacks while preserving ease of operation through consistent interaction patterns and clear visual feedback
4Device complexity
If a touch screen interface is used instead of a mechanical keypad, then device complexity is reduced, but manufacturing precision requirements increase
Solution Approach 1:
The patent replaces the mechanical keypad system with a touch screen interface. This substitution eliminates mechanical components and moving parts, reducing device complexity while using the optical and capacitive sensing properties of touch screens to detect user inputs with high precision
Data Source
AI summary
Systems and methods according to the present invention provide a more secure Automated Teller Machine (ATM) transaction by preventing observation of banking customers' Personal Identification Number (PIN). Such systems and methods make it difficult to obtain a customer's PIN by tracking the hand movement of a customer using an ATM. Inputs presented for a customer selection are preferably dynamically displayed in different locations preferably each time the customer is asked to enter a PIN. Dynamically changing the sequence of the display and/or location of the presented inputs reduces the possibility of mapping the hand movement of the customer to the positions of the inputs displayed for a customer selection. Inputs may also be presented at a very narrow viewing angle, thereby making observation of a PIN difficult. Hence, banking customers are preferably provided with a more robust and secured ATM transaction system.