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 ...

Of all the features you may have noticed on your iPhone, one that stands out is the Barometer. What does this tool do, and ...

When I wrote about the hidden sensors on Android phones, the two sensors that stood out the most were a magnetometer that turns your phone into a metal detector and a barometer, which is supposed to ...

Add Yahoo as a preferred source to see more of our stories on Google. A barometer is a tool meteorologists use to measure atmospheric pressure, which is defined using millibars (mb). The layers of air ...