Smart Shelf System for Customer Behavior Tracking in Supermarkets. - John Anthony C. Jose; Christopher John B. Bertumen; Marianne Therese C. Roque; Allan Emmanuel B. Umali; Jillian Clara T. Villanueva; Richard Josiah Tan Ai; Edwin Sybingco; Jayne Lois San Juan; Erwin Carlo Gonzales (Sensors, 2024)