KL Techs

We may earn a commission from links on this page. When I test smartwatches and fitness trackers, I place a particular emphasis on accuracy. Is my running pace correct? Does the device capture the ups and downs of my heart rate? I even got a VO2max lab test to check a bunch of watches' fitness scores. But one thing I never test for accuracy is calorie burn. None of my devices come close to agreeing on the number of calories they think I'm burning, and I don't expect them to. Even scientists who study the accuracy of wearables can't answer the question in a way that's useful when you're shopping for this year's devices—but we'll get into why that is below. There was a time, before Fitbits, when nobody knew quite how many calories they were burning on a daily basis. Sure, you could calculate a rough estimate based on your body size, sex, and age. You could choose whether or not to believe the calorie readout on the cardio machines at the gym. (You shou...

A VPN conceals your IP address by routing your internet traffic through a remote server, preventing anyone surveilling the network from tracking your online activity. Theoretically, that means no one should be able to identify you when you connect to a network and browse the internet, even your ISP.  In practice, though, there are plenty of gaps that hackers can exploit. A while back, Lifehacker covered browser fingerprinting , which uses hundreds of data points, like your hardware specs, operating system version, web browser, and GPU signature, to establish a shadow profile that follows you around even when your VPN is enabled. There's another way cyberattackers can intercept your data, and it involves exploiting a communication leak right inside your browser.  Major browsers like Chrome, Firefox, and Edge have a feature called WebRTC that lets them bypass the encrypted Transmission Control Protocol (TCP) tunnel created by your VPN to establish high-speed connections for de...

We may earn a commission from links on this page. Deal pricing and availability subject to change after time of publication. This 65-inch Samsung M80H TV is currently $647.99 (originally $797.99). For anyone who wants to level up from a smaller TV without having a screen take over the entire room, 65 inches is the sweet spot; it gives you that cinematic feel for movies and gaming but is still easier to place on a media console or stand than a more massive alternative (that said, the 75-inch model is also 33% off right now). Samsung 65-Inch Class M80H Series TV $647.99 at Amazon $797.99 Save $150.00 ...

We may earn a commission from links on this page. If you're like me, you are paying for a ton of subscriptions you don't even remember signing up for. Let's make this the year of only having subscriptions that add to our lives. The digital services below are the best things you can subscribe to in 2026 if you want to actually improve yourself and your world, whether it's through cutting your DoorDash bill, supporting your local bookstore, or finding obscure movies to impress your friends. Best overall digital subscription of 2026: Apple One While there's no single digital service that everyone will like, Apple One comes close. Anyone with an iPhone (i.e., most phone users in the U.S.) will appreciate a single digital bundle that covers Apple Music, Apple TV+, Arcade, and extra iCloud storage. That's streaming, gaming, and storage covered for $21.95 a month. Pro tip: The Family Plan includes six separate accounts for $27.95 a month, and your "family"...

We may earn a commission from links on this page. If someone on your list needs a new smartwatch, it can be challenging to figure out which model to buy—there are more than a few on the market, all claiming to be the best at what they do. But unlike other devices, smartwatches are largely dependent on the other devices the user also owns. Once you take that into consideration, the decision becomes much easier. As such, these are the best choices for smartwatch gifts this year. Best Apple Watch gift for most people: Apple Watch SE 3 Apple Watch SE 3 $239.00 at Amazon Shop Now ...

When you think about browsers, Vivaldi is probably not the first name that comes to mind—but it should be. This is a Chromium-based browser that focuses on adding so many features that you don't need to install multiple apps to get things done. Vivaldi has been around for over a decade now , and has become a pretty complete product, though it continues to improve. I've been using the browser for while, and these are the best Vivaldi hacks I've found in my time. Use Chrome extensions to enhance privacy in Vivaldi for Android Vivaldi for Android , one of the best non-Chrome browsers on Android , recently added support for Chrome extensions—even though Chrome for Android still doesn't support extensions. You can use it to enhance your privacy by installing uBlock Origin Lite to block ads and tracking. You should also consider using Decentraleyes to evade tracking through centralized content delivery networks, and SponsorBlock to skip sponsored segments in YouTube vide...