Hasibuan, Fathahul Ammar, and Firahmi Rizky. 2026. “Design and Implementation of an IoT-Based Automatic Package Box Security System With Vibration Sensors and GSM Notifications Using ESP32”. Jurnal Sains, Teknologi &Amp; Komputer 3 (1):30-34. https://doi.org/10.56495/saintek.v3i1.1630.