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

Scientists have revealed, for the first time, a method to reprogram specific T cells. More precisely, they discovered how to turn pro-inflammatory cells that boost the immune system into ...

I've been a contributing editor for PCMag since 2011. Before that, I was PCMag's lead audio analyst from 2006 to 2011. Even though I'm a freelancer now, PCMag has been my home for well over a decade, ...

Active noise cancellation is an increasingly common feature of wire-free earphones. If you want to block out the world around you, check out the best noise-cancelling wireless earbuds we've tested.

We are all in search of the fastest in a wireless router, to give ourselves the best connectivity to the world. But what about the slowest? Gigabit Ethernet may not be for everyone, as Matt Deeds ...

Tyler has worked on, lived with and tested all types of smart home and security technology for over a dozen years, explaining the latest features, privacy tricks, and top recommendations. With degrees ...

We independently review everything we recommend. When you buy through our links, we may earn a commission. Learn more› By Lauren Dragan Lauren Dragan writes about audio tech and OTC hearing aids. She ...

Don't like scammers? You won't like burglars either. See your best security system. Theft Protection Guarantee: Customer may receive reimbursement of up to five hundred dollars ($500) of Customer’s ...

If the Reset This PC option is not working on your Windows 11 or Windows 10 computer, and when you try to perform the operation, a loading spinning circle appears and then disappears, or in some cases ...

PCWorld identifies six warning signs that indicate your Windows PC needs a factory reset, including persistent performance issues, accumulated bloatware, and malware infections. Regular annual resets ...

We independently review everything we recommend. When you buy through our links, we may earn a commission. Learn more› By Kimber Streams Kimber Streams is a writer who has been covering laptops and ...

Jeff Carlson writes about mobile technology for CNET. He is also the author of dozens of how-to books covering a wide spectrum ranging from Apple devices and cameras to photo editing software and ...