Door sensors detect door position (i.e., open or closed) based on the precise gap between the magnet and the reed switch.

In its support page , Samsung explains how the sensor's light-emitting and light-receiving components work in tandem. Simply ...

Consumer devices like cell phones are using more and more sensors to save power and enhance our interaction with them. Some of the latest devices have multiple sensors; and now, two important and ...

When you're talking on a modern smartphone, the display will turn off as soon as you bring the handset to your ear. The feature is meant to prevent accidental taps or interactions with the display.