How does a barcode scanner work? A barcode scanner uses light and electronic sensors to read a pattern of bars, spaces or squares and convert it into digital information. Traditional laser scanners measure reflected light as a beam moves across a barcode, while imaging scanners capture the pattern using a digital sensor. The decoded information…

How do escalators work? Escalators use an electric motor, a continuous loop of connected steps and a carefully designed track system to move people between different levels. As the motor drives the step chains, wheels follow separate tracks that keep the steps level while they travel along the slope. At the top and bottom, the…

How do automatic doors detect people? Most automatic sliding doors use electronic sensors to recognise movement or presence near an entrance. Microwave radar can detect someone approaching, while infrared sensors help establish whether a person or object remains in the doorway. Together, these technologies allow the doors to open automatically and reduce the risk of…