BADRIAH, N.; VERI SHANDY, S. OPTIMIZATION OF GYM CHECK IN AND MEMBERSHIP INFORMATION SYSTEM QR CODE SCANNER BASED. Scientific Journal of Information System, [S. l.], v. 2, n. 2, p. 27–29, 2024. DOI: 10.70429/sjis.v2i2.131. Disponível em: https://jurnal.utpas.ac.id/index.php/sjis/article/view/131. Acesso em: 3 dec. 2024.