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All Journal ALGORITMA : JURNAL ILMU KOMPUTER DAN INFORMATIKA Jatilima : Jurnal Multimedia Dan Teknologi Informasi Mudabbir: Journal Research and Education Studies Journal of Vocational Education and Information Technology (JVEIT) Jurnal Pengabdian Masyarakat dan Riset Pendidikan The Indonesian Journal of Computer Science
Elsa Sabrina
Unknown Affiliation
Humanities Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Education Electrical & Electronics Engineering Engineering Languange, Linguistic, Communication & Media Mathematics Mechanical Engineering Social Sciences Other

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Performance Evaluation of a Mobile Attendance System Using Dual-Factor Dynamic Qr Code and Gps Geofencing Siregar, Rosma; Maulana, Bagoes; Muhammad Isnaini; Elsa Sabrina; Hutahaean, Harvei Desmon
Jurnal Multimedia dan Teknologi Informasi (Jatilima) Vol. 7 No. 06 (2026): Jatilima : Jurnal Multimedia Dan Teknologi Informasi
Publisher : Cattleya Darmaya Fortuna

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54209/jatilima.v7i06.2281

Abstract

This study develops and evaluates an Android-based attendance system integrating dual-factor authentication using dynamic QR codes and GPS geofencing to prevent proxy attendance in higher education. The system was developed using the Waterfall model and evaluated through quantitative experiments measuring response time, GPS accuracy drift, and security robustness via Black-Box testing. Results show high efficiency with an average response time below 1.5 seconds. GPS validation achieved an average drift of 4.2 meters outdoors and 12.5 meters indoors, remaining within the 30-meter geofencing threshold. The system successfully rejected unauthorized attempts, including out-of-range scans and fake GPS spoofing. These findings demonstrate that combining dynamic QR codes with GPS validation significantly improves attendance authenticity and system reliability compared to single-factor methods. The study provides empirical evidence of a robust and scalable solution for secure mobile-based attendance systems in higher education.
Implementation Of Learning Based On Creative Thinking Skills Using Augmented Reality To Improve Academic Achievement Of Students In Computer Assembly Courses Reni Rahmadani; Tansa Trisna Astono Putri; Muhammad Dominique Mendoza; Olnes Hutajulu; Elsa Sabrina
Journal of Vocational Education and Information Technology (JVEIT) Vol. 7 No. 1 (2026): Jurnal JVEIT : Vol 7 No 1 2026
Publisher : Lembaga Pengembangan dan Inovasi Universitas Dharmas Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56667/jveit.v7i1.2135

Abstract

This study aims to evaluate the effectiveness of implementing Creative Thinking Skills (CTS)-based learning using Augmented Reality (AR) media to improve students’ academic achievement in the Computer Assembly course. The research employed a quantitative approach with a quasi-experimental method and a one-group pretest–posttest design. The subjects consisted of 30 undergraduate students of the Information and Computer Technology Education Study Program at Universitas Negeri Medan. The instruments used included a learning outcomes test, a CTS assessment rubric, and a student satisfaction questionnaire toward AR media. The learning outcomes were analyzed using the Normalized Gain (N-Gain) test, while the CTS scores were examined using a paired t-test, and the satisfaction data were analyzed descriptively. The findings showed that the use of AR significantly improved students’ learning outcomes with an average N-Gain value of 0.72 (high category). The students’ CTS scores also increased across all indicators—fluency, flexibility, originality, and elaboration—achieving an overall category of “highly creative.” Furthermore, the average satisfaction score of 4.26 (out of 5) indicated that students were very satisfied with AR-based learning. These results demonstrate that integrating AR media with CTS-based learning effectively enhances both academic performance and creative thinking abilities. Therefore, this model is recommended for use in other technology and vocational courses to promote innovation and deeper conceptual understanding.
Co-Authors Afandi Yusuf Lubis Aldy Primanda Barus Ambiyar, Ambiyar Andhika Herayono Anjelita Asmar Yulastri Debora Cindy Purba Dedy Irfan Diah Fadilillah Dwi Febrina Eliasta Agustinus Sebayang Fahmi Rizal Firdaus Firdaus Ganefri Ghaitsa Zahira Lubis Hansi Effendi Hasan Maksum Hutahaean, Harvei Desmon Imam F Hutasuhut Ira Gusdhini Harahap Jesica Aime Siahaan Maria Niscaya Ndruru Maulana, Bagoes Mendoza, Muhammad Dominique Monika Putri Puspita Siagian MUHAMMAD ILHAM MUHAMMAD ISNAINI Olnes Hutajulu Pinkan Ramadhani Putri, Tansa Trisna Astono Raden Muhammad Fathur Rahman Rafael Owen Kevin Nainggolan Raffi Hidayat Rahmansyah Angga Saputra Rahmi Isnaini Raisa Nadrah Shafira Hia Reni Rahmadani Rizky Abimayu Utama Tanjung Rosma Siregar Selvia Amanda Kayla Shinta Eva Celina Silvi Amelia Sopiah Rahmadani br Torus Syahputra, Fahmy Wan Safari Ramadhan Waskito Wulansari, Rizky Ema Yulianti, Rosi Zherina Br Sitepu