Nasution, Adnan Buyung, Ahir Yugo Nugroho Hrp, Yudi Yudi, and Muhammad Fauzi. “Implementation of OTP Code As Application Login Verification Via Whatsapp”. Indonesian Journal of Applied and Industrial Sciences (ESA) 3, no. 4 (July 30, 2024): 395–402. Accessed April 17, 2026. https://journal.formosapublisher.org/index.php/esa/article/view/10225.