IJLTEMAS International Journal of Latest Technology in Engineering, Management & Applied Science (IJLTEMAS) IJLTEMAS 2278-2540 IJLTEMAS 566 10.51583/IJLTEMAS.2026.151000047 Embedded system Potentiometer-Based Rotational Pattern Authentication System Mathew Jibish Department of Electronics, Prajyoti Niketan College, Pudukkad, Thrissur, Kerala India. India Rasheed Abdul Department of Electronics, WMO College, Wayanad, Kerala, India. India 15 10 589 592 15 10 2026 20 10 2026 05 11 2026 Potentiometer Rotational Pattern Authentication Passkey User Authentication Microcontroller Electronic Lock Access Control Embedded Security Abstract

Conventional authentication systems, including numerical passwords, graphical patterns, facial recognition, and fingerprint identification have certain limitations related to observation attacks and biometric spoofing. This research proposes a potentiometer-based rotational pattern authentication system. It uses a user-defined sequence of rotational movements as a personalized passkey for device access. In the proposed method, a potentiometer serves as the primary input device, converting rotational movements into corresponding electrical signals. During the registration phase, the user creates and stores a unique rotational pattern consisting of a sequence of selected angular positions and rotational directions. During authentication, the system captures the input rotational sequence and compares it with the stored pattern. Access is granted only when the entered sequence matches the registered pattern, otherwise, access is denied. The proposed approach provides an alternative to conventional password-based and biometric authentication methods.

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