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How To: Make the Platonic Solids Out of Playing Cards

Computer Science Professor Francesco De Comité has a fantastic gallery of mathematical images on Flickr. As part of this collection, he has a few hundred images of real or rendered polyhedra made out of paper or playing cards which he calls "slide togethers." These are constructed by making cuts and then sliding one component into the other, creating a shape without using any glue. He constructed the entire set of the platonic solids—the cards form their edges—which can be seen in the image b...

How To: Improve your memory with association memory games

Do you have trouble remembering where you put your keys or what you need to buy at the grocery store? You're not alone, millions of Americans suffer from bad short-term memory, but there are ways to help improve your memory. Watch this video to learn how to play some easy memory games that will help you remember things.

How To: Add a Bank Account, Debit Card, or Credit Card to Your PayPal

PayPal is one of the most popular payment systems across the globe. It makes payments fast, easy, and secure, and with 250+ million users, it's not going anywhere. If you're new to the online service, one of the first things you should learn is how to add your bank account, credit card, or debit card to PayPal, and make your life easier when it comes to online payments and withdrawals.

How To: Spot Fake Businesses & Find the Signature of CEOs with OSINT

Businesses leave paper trails for nearly every activity they do, making it easy for a hacker or researcher to dig up everything from business licenses to a CEO's signature if they know where to look. To do this, we'll dig into the databases of government organizations and private companies to learn everything we can about businesses and the people behind them.

News: Apple Releases iOS 12.2 Public Beta 4 to Software Testers Early, Includes New Icons & Other Small Tweaks

Apple released iOS 12.2 beta 4 to developers on Monday, March 4, then shortly thereafter also pushed it out to everyone on the iOS 12.2 public beta program. All previous public beta updates for iOS 12.2 were released the following day, but this one changes course. In the iOS 12.2 public beta 4, there are new icons, an updated "About" page, and better Now Playing tile.

How To: Use All 10 Fingerprints for Touch ID on Your iPhone — Not Just 5 of Them

While Apple has moved on from Touch ID to Face ID in newer iPhone models, there are still plenty of iPhones with fingerprint sensors — in fact, Apple's second-generation iPhone SE is the first new Touch ID iPhone in three years. With Touch ID, you can register up to five fingerprints, but it doesn't stop there. Using a little-known trick, you can sneak another five fingerprints in there for a total of ten.

News: 11 Reasons to Not Skip Out on AppleCare+ When Buying a New iPhone

On the surface, AppleCare+ seems like an expensive and gimmicky option to tack onto your already pricey iPhone 11, 11 Pro, or 11 Pro Max. Upon further inspection, however, you'll see that its seemingly expensive price tag is chump change compared to the fees you'll have to pay if you end up having to repair your premium device outside its one-year warranty.

How To: Use Third-Party Password Managers with iOS 12's AutoFill Feature

Improved security options in iOS 12 provide you with automatic password suggestions, a way to find and change weak passwords, auto-filling of 2FA codes, and Siri integration. Most of these apply to iCloud Keychain, but Apple hasn't forgotten about users of third-party password managers; In iOS 12, you can use 1Password, LastPass, and others with the AutoFill feature in websites and apps.

News: Magic Leap One Teardown Reveals Sophisticated Hardware with Shortish Shelf Life & Low Repairability

One of the primary marketing tactics used by Magic Leap in promoting the Magic Leap One was selling early adopters on the "magic" contained within the device. On Thursday, some of that magic was uncovered as the Magic Leap One was completely disassembled by repair engineers, revealing the delicate innards of the device and detailing how it delivers its augmented reality experiences.

News: The Top 10 New Features in iOS 12's Messages App for iPhone

Sometimes incorrectly referred to as "iMessage," the Messages app is where iPhone owners go to chat with iOS users across the world. Apple has made some significant improvements to the messaging app with its iOS 12 update for iPhone. If you're interested to see how your Messages experience has changed since installing the new firmware, check out the features below.

iOS Security: How to Untrust Computers Your iPhone Previously Connected To So They Can't Access Your Private Data

If you've ever connected your iPhone to a computer before, you know iOS prompts you to "Trust" the computer and enter your passcode to confirm. According to Apple, trusted computers can "sync with your iOS device, create backups, and access your device's photos, videos, contacts, and other content." That's a lot of permissions to hand off, especially if the computer's not your main laptop or desktop.

News: Time for an Upgrade? Here's How the Galaxy S9 Compares to the S7 Edge on Paper

Samsung has legions of loyal fans, and for good reason — their Galaxy S lineup ticks so many boxes that it would be a downgrade to switch to any other phone. Though if you're still rocking an older model like the Galaxy S7 Edge, the all-new Galaxy S9 can tick all the same boxes plus a few more. But is it worth the money to upgrade at this point? That's actually a tougher call than you might think.

Firefox Mobile 101: How to Turn Websites into Apps on Your Home Screen with the New Quantum Browser

There are over 3 million apps in the Google Play Store, all optimized for the small screen in your hands. While that number sounds staggering, there are still many online tools and websites that require you to use a mobile browser since app development is expensive. However, that's where Progressive Web Apps (PWAs) come into play, a cost-effective way to turn websites into mobile apps.

How To: Your Android Phone Comes with a Face ID Feature Built In — Here's How to Use It

The iPhone X has a new unlocking mechanism called Face ID, which replaces the old Touch ID system since the phone no longer has a fingerprint sensor. The way it works is simple — you just look at the phone, it recognizes your face, then the system unlocks — so Apple deserves the praise they're getting for it. But did you know you can get almost this exact same feature on any Android device right now?

News: How Gut Bacteria Could Set Off the Immune System in Rheumatoid Arthritis

As if the swollen, painful joints of rheumatoid arthritis weren't enough, the disease is the result of our immune system turning against cells of our own body. Ever since this realization, scientists have worked to find the trigger that sets the immune system off. Scientists believe that gut bacteria may have a role in initiating the abnormal immune response. Now, a team of researchers from Boston has figured out how that might occur.