Modern smartphones are packed with a wide range of sensors, and their magnetometer can successfully identify certain kinds of metals.

These electronic copilots can pick up speed traps, red-light cameras, and more.

When it came time to test radar detectors, I wanted to do something other than just speed around flagrantly defying the law, hoping to pick up police radar. I needed an adventure, a modern-day ...

A radar detector can help you evade police who are actively looking for speeders. And thanks to a slew of modern features, the best radar detectors, like our top pick, the Uniden R8, can also improve ...

When you think of radar detectors, you might imagine a device that will helps people avoid the police and any penalties that might incur because of their driving. But that's only one reason a person ...

A little over a year ago we’d written about a sub $100 muon detector that MIT doctoral candidate [Spencer Axani] and a few others had put together. At the time there was little more than a paper on ...

Carbon monoxide is unforgiving, and the margin for error in how you place your detector is far smaller than most homeowners ...

The first time most people hear the quiet chirp of a smoke detector in the dead of winter, it feels like a minor nuisance. It ...

This article was updated with new information in December 2025. Nothing ruins a spirited drive like the sudden strobe of red and blue in the rearview mirror. We've all been there, and it never feels ...