KIRANA, Pelangi Kartika Chandra; MUFID, Mohammad Robihul; SETYADI, Agung Teguh; MAWADDAH, Saniyatul. Location Validation and Server Time Synchronization for iOS-Based Attendance to Mitigate ASN Fraud in Lamongan. Journal of Advanced Vocational Information and Communication Technology, [S. l.], v. 1, n. 3, p. 29–42, 2026. DOI: 10.52158/javict.v1i3.1687. Disponível em: https://journal.isas.or.id/index.php/javict/article/view/1687. Acesso em: 6 oct. 2026.