Halil Nustadia, Rosman E, Fitri Nova, Hidra Amnur. IoT-Based Prepaid Water Meter System with Digital Token for PDAM Customers. jitsi [Internet]. 2025Dec.31 [cited 2026Jan.3];6(4):383 -388. Available from: https://jurnal-itsi.org/index.php/jitsi/article/view/513