The iPhone 6, 6 plus and the iPad Air 2 added a barometer sensor. Ostensibly it is supposed to help the device better track your steps for the health app by knowing when you've gone up and down stairs ...

John Carlsen has more than a decade of experience testing and reviewing home tech products, with a major focus on smart home security. He earned his BS in journalism from Utah Valley University. In ...

Barometers are devices that measure atmospheric pressure (also known as “air pressure” or “barometric pressure”). You can use these readings to predict the weather. For instance, high pressure ...