| Summary: | Mobile devices are very important in our daily life nowadays. However, it has security drawbacks particularly in device authentication. Conventional text-based passwords are exposed to vulnerabilities. Simple passwords are susceptible to brute-force attacks, while complex ones are difficult to recall, leading to forgetfulness and user frustration. This research proposes an integration of a Graphical User Interface (GUI) authentication system within mobile applications which are recognition-based, recall-based, and cued-recall authentication. The mobile application is developed using Flutter which is a practical exemplar of the three-Tier GUI authentication system. A questionnaire was distributed among twenty (20) users which focuses on usability, design scheme and security level of the mobile application. The result findings indicate the significance of the three-layer GUI authentication presenting a holistic approach of mobile security while preserving user convenience. The implication of this research promotes a more secure digital landscape, which redefine mobile security authentication practices for the better. © 2023 IEEE.
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