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How To: 23 Things Your iPhone's Volume Buttons Can Do Besides Volume Adjustments

The volume buttons on the side of your iPhone can do more than just adjust the volume levels for media, ringers, alerts, Siri, and other sounds and voices. You can use them to perform different actions in certain apps and even create custom actions using the Shortcuts app. It's not exactly button mapping, but it's as close as you'll get without jailbreaking iOS.

How To: Customize Colors for All the Apps on Your iPhone to Match How You Use Them Most (Or Just for Fun)

There aren't many iPhone apps that let you change their color theme beyond light and dark appearances. They really don't need to either because iOS has a few hidden tricks up its sleeves to help you customize any app's colors either during a specific session or every time you use the app.

How To: Always Use Dark Mode or Light Mode for Any App on Your iPhone

Some apps look great with Dark Mode, and some do not. So when you have system-wide Dark Mode enabled on your iPhone and are using an app that only looks good in Light Mode, you'd normally have to turn the dark appearance off manually, then switch it back on when you leave. But there's a workaround that can automate the process for you.

How To: Remember These Popular App Store Games? They're Still Alive to Play Today

The App Store has been around for almost 14 years now, and during that time, we must have seen over a million games come and go and stay and expand. But only a tiny fraction of those games have become blockbuster sensations because of the mighty App Store's reach on iPhone and iPad, and many of the first big hits are still alive today for you to relive the good ol' days of mobile gaming.

How To: Always-Updated List of Apps That Let You Change Their Home Screen Icons on Your iPhone

Apple's Shortcuts app lets you make and use custom icons for any app on your iPhone, but it won't actually replace any icons. If your goal is to change the official icon for the app itself without any redirects, there's a growing list of third-party apps that'll let you do just that.

How To: Earn Free Money, Stocks, Crypto, Gift Cards, and Other Cash Rewards on Your iPhone

With all the time most of us spend on our phones each day, wouldn't it be great if we could get rewarded for our addiction? Well, we can, thanks to various iPhone apps out there that can help us make a quick buck, earn cash back, donate freebies to charity, get complimentary cryptocurrency or stock, and receive other types of rewards.

How To: Everything You Need to Know About Your iPhone's Focus Feature — From Creating and Editing Focuses to Automating Them

In iOS 15, Apple unveiled a new feature called Focus, an extension of Do Not Disturb that lets you focus on the one thing that's important at any particular moment. It does so by minimizing distractions from your iPhone and other Apple devices, but there's a lot you should know about setting up and using Focus on your iPhone or iPad before you dig in.

How To: Code a Dead Man's Switch in Python 3 to Encrypt & Delete Files Whenever You Don't Check In

A dead man's switch is a fairly simple concept. If you don't perform a specific task before a set amount of time, it'll perform a specific action you set. They can be handy not just for hackers but for everyone who wants to protect themselves, someone else, or something tangible or intangible from harm. While there are more nefarious uses for a dead man's switch, white hats can put one to good use.

How To: Program MicroPython NeoPixel Holiday Lights to Animate However You Want

Individually addressable LEDs, also commonly called "NeoPixels" after the popular Adafruit product, are a bright and colorful way to get started with basic Python programming. With an inexpensive ESP8266 or ESP32 microcontroller, it's easy to get started programming your own holiday lighting animations on a string of NeoPixels with beginner-friendly MicroPython!

Gift Guide: Essential Smartphone Camera Accessories for Filmmakers

Advancements in technology have made it perfectly possible to make a short film or even an entire movie with your iPhone or Android — as long as you've got the right gear. Lenses, stabilizers, tripods, lighting, microphones, chargers, and cases can make the difference between a good movie and a great film, all of which can make a great gift for those aspiring (or current) filmmakers in your life.

Android 10 Changelog: 60 New Features You Should Know About

|Choose Your View: Quick Bullet Points | Detailed Descriptions Android's newest major update is a special one — it's the tenth full version of the world's most commonly used operating system. The latest release, dubbed simply Android 10 (codename Android Q), was first showcased as a beta back in March 2019, so we've been digging around in it for several months. There's one dramatic visual change, plus there are a lot of goodies in general.

How to Hack Wi-Fi: Build a Software-Based Wi-Fi Jammer with Airgeddon

Airgeddon is a multi-Bash network auditor capable of Wi-Fi jamming. This capability lets you target and disconnect devices from a wireless network, all without joining it. It runs on Kali, and we'll cover installing, configuring, and using its jamming functionalities on a small, inexpensive Raspberry Pi. When done correctly, it will deny service to a wireless network for up to several blocks.

DIY Scientists Beware: When NOT to Use Household Chemicals for Your Projects

The only thing better than successfully pulling off a new experiment is doing it with household materials. You get to laugh in conceit as professional scientists everywhere spend all their grant money on the same project you just accomplished with some under-the-sink chemicals! However, there are times when DIY gets dangerous. Some household chemicals are not pure enough to use and some are just pure dangerous. Let's take a look at two problems I have encountered in the course of mad sciencing.

News: Make a Battery Out of Money

Hunkin's Experiments offers over 200 science experiments freely available in comic strip form. The experiments are organized in 18 different categories, covering a wide range from simple trickery to more technical experiments. The author, Tim Hunkin, is a trained engineer turned cartoonist, and also responsible for TV series/site The Secret Life of Machines (worth a look).

How To: Use steam to to crush a can

*WARNING* This experiment uses heat and boiling water, so be sure to have an adult around to help. This classic experiment is a fun way to learn about air pressure. We don't usually think much about the air around us, even though it plays such a vital role in our lives. it gives us oxygen to breath, carries away excess heat from out bodies, and squeezes us with over 30,000 pounds of pressure. Wait a minute! What was that last part?For this experiment, you will need:

Practice Makes Perfect: A Quick Tip for Making Money

Entrepreneur Jason Fried is co-founder of 37signals, a successful Chicago-based software and design firm that has doubled its sales every year for the past decade. Although Fried has a degree in finance, making money isn't a skill he picked up in the classroom or a book. Practice makes perfect, and Fried's experience has taught him that excelling at making money is separate from the product or services provided. Understanding the buyer and experimenting with price models are two of Fried's ke...

How To: Do the diet coke and mentos experiment

What happens when you combine 200 liters of Diet Coke and over 500 Mentos mints? It's amazing and completely insane. The first part of this video demonstrates a simple geyser, and the second part shows just how extreme it can get. Over one hundred jets of soda fly into the air in less than three minutes. Do the diet coke and mentos experiment.

Jonathan's Starbucks Card: A Social Experiment in Sharing Ends

Last month, mobile application consultant Jonathan Stark unleashed his Starbucks Card to the public as an "experiment in social sharing of physical goods using digital currency on mobile phones." Basically, he purchased a Starbucks Card and registered it via the Starbucks Mobile App for iPhone (there's an Android one, too) which allows caffeine addicts to pay for coffee and baked goods with their mobile device. He then took a screenshot of the barcode and let anyone on the web download it for...

How To: Hum While Beatboxing

Humming while beatboxing is one of the most important techniques to pick up if you're planning to cover popular songs. It's also a key element for singing and beatboxing, but that's for another tutorial. Here, I'll teach you how to hum while beatboxing by explaining exactly how it works.

How To: Do the Ing Ping Ching magic trick

In this video magician David Zanthor shares an age old magic trick. You will need a willing human, a deck of cards, a rubber band, two identical coins and skills. The trick? It involves Ing Ping Ching energy and it is quite involved...so you will have to watch the video! Do the Ing Ping Ching magic trick.