Edu Coore on Instagram: "A cash counting machine works by quickly pulling each note through a set of high-speed rollers and using multiple sensors to check its authenticity. As the machine counts, it scans the currency’s size, thickness, and weight to ensure every note matches the standard dimensions. It also uses **ultraviolet (UV) sensors** to detect security strips, **magnetic (MG) sensors** to identify magnetic ink used in genuine notes, and **infrared (IR) sensors** to read hidden patterns