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I. Introduction to Proximity Sensor Technologies Proximity sensors are essential devices used to detect the presence or absence of an object within a specified range without physical contact. They operate by emitting various forms of energy—such as electromagnetic fields, sound waves, or light—and measuring the response when an object comes close to the sensor. The […]

I. Introduction to Proximity Sensors in Phones A. Definition of proximity sensors A proximity sensor is a device used in smartphones to detect the presence of nearby objects without physical contact. It typically operates by emitting an electromagnetic field or a beam of electromagnetic radiation (such as infrared) and measuring changes in the field or