Change a Bike Cassette

While texting and driving may get you a ticket, there are still a ton of uses for your phone in your car, music and navigation just to name a couple. Every Android device comes with access to GPS and traffic updates, but none of those apps really have your back in real-time. ...more

After years of speculation and rumors, Apple finally debuted AirTag, its tiny Bluetooth tracking device, during its spring 2021 event on April 20. Unlike with Tile trackers, there's no way to attach an AirTag to an object, but there's an entire market out there for AirTag acce ...more

Instructable user samsmith17's solution for riding in the dark is a lot snazzier than your typical bicycle light: "This summer I realized that you don’t need a driver to run your el wire if you’re putting it on a bike. I hooked a stepper motor up to a transformer from an old ...more

A Self-Protection Guide 1) You can help protect yourself from violent crimes. Self-protection involves:Avoiding crime * Without a doubt prevention is your best prevention against crime.Knowing what to do in case of an attack* An attack can happen despite your best efforts to p ...more

I love making beeps and bloops with the Arduino pitches library, but sometimes archaic 8-bit tunes just don't cut it. Whether you want your robot to terrify your enemies with a demonic synthetic voice, you just need a pocket boom box on the go, or you want to a miniature guita ...more

In our media-enriched world, past and present, SCRABBLE has made a name for itself, whether deliberately, subconsciously, or influentially. You may have a read a book that had the popular word game within a chapter, watched a movie that showed your favorite characters bringing ...more

By Louis Tharp RealJock.com is pleased to present this first in a series of articles on improving your swimming form and performance from Louis Tharp, out gay man, swim coach for the Army Triathlon Team at the U.S. Military Academy at West Point, and author of the new book Ov ...more

We've seen compressed air power a homemade rocket, shoot erasers across the room, and even remove dents from a vehicle, but how about breaking a bike lock? As Theodore Gray of PopSci explains, no matter how tough your lock is, there's one thing that will defeat it every time— ...more

A strange thing is happening: there are people, groups of people even, walking the streets day and night staring wide-eyed at their mobile phones and laughing like manic children. What are these people doing? Are they taking pictures? Are they participating in some new social ...more

Silence spreads over these mountains like nothing I've ever felt. If I didn't have Moby blasting in my earphones, there'd probably be no other sounds around. Well, except for someone, Phil probably, murmuring in a nearby tent just low enough to make his words indiscernible. W ...more

The new iOS 14 for iPhone arrived Wednesday, Sept. 15, 2020, alongside iPadOS 14, and there are a lot of features to uncover. Improved widgets. Better home screen customization. Exciting Messages improvements. New abilities in Camera and Photos. There's so much here that it'll ...more

You don't have to be a frequent flyer to know how indispensable navigation apps have become. Many of us rely on these apps for traveling from state to state and getting around in foreign cities, but even more of us count on these apps to beat rush hour traffic and find the qui ...more

People who know that I am a professional hacker often ask me what they can do to make their computers and personal information safe from people like me. The answer, of course, is that nothing will make you completely safe, but there are a number of measures any computer user c ...more

Pokémon GO, the biggest augmented reality sensation ever, broke app store records this opening weekend. But it also did something even more important: it gamified physical activity. You've probably heard that sitting will practically kill you, and that you need to avoid a sed ...more

Once the laughing-stock of the navigation app market, Apple Maps is now a powerful, reliable travel companion. Apple rebuilt the platform from the ground up, placing the app in league with Google Maps. That said, there's always room for improvement, as demonstrated by its impr ...more

When the Google Maps web app got a massive redesign earlier this year, I was pretty excited to try it out, but it was a fairly disappointing update for me. The slower load times, confusing street view, and bicyclist neglect are just a few of the reasons I don't enjoy it over t ...more

Apple's iOS 14 is here. With it, you'll see over 200 new features and changes hit your iPhone, including home screen widgets, inline replies in Messages, and cycling routes in Maps. Here's how you can get your hands on the brand new update. Apple released iOS 14 to compatible ...more

Earlier this year at WWDC, Apple made a big show of featuring augmented reality as a central part of iOS moving forward. But since then, other than comments from the company's CEO, Tim Cook, we haven't seen much direct promotion of augmented reality from the company. Until now ...more

Alright, I'll admit it, iOS can be quite nice. Android loyalist that I may be, I'm not so stubborn that I can't recognize a good thing when I see it. Apple's iOS has a lot of strengths, and our Nexus 4s, god bless 'em, are growing a little long in the tooth. But the Android p ...more

Staying alert to directions and changing the music you're listening to on your smartphone at the same time can be cumbersome, but Google Maps wants to fix that. One of the mapping service's features allows you to control music playing on Spotify, Apple Music, and Google Play M ...more

If you have an Apple Watch, you might know that the activity awards you earn can be shared with your friends as iMessage stickers on your iPhone. However, you first have to earn achievements in order to use them as stickers. That changes somewhat with iOS 12, as Apple added an ...more

While we just called the Apple Watch Series 5 the "best lifestyle assistant and fitness wearable you can get," it doesn't mean that it's the model you should get. Whether you're shopping for yourself or someone else and are on a tight budget, the Series 4 offers the majority o ...more

Samsung Health has become one of the most comprehensive wellness apps thanks to features that cover everything from step counting to nutrition logging and symptom diagnosis. But because the app has so much to offer, it can be easy to overlook some smaller, but useful features. ...more

While most people were worried about having the scariest costume when I was younger, I was always more interested in the candy. While everyone wasted time trying to perfect their costume, I was busy mapping out every detail in my city, finding the most efficient way of getting ...more

When you were younger, you probably had your parents bugging you not to have your cassette player headphones up too loud. For all you younger readers out there, it was probably a CD player. The even younger readers likely had an iPod or other MP3 player. Either way, your paren ...more

If there's one way to get a visceral response from someone, it's bringing up the DMV. Regardless of the reason, whether it's the long lines, disgruntled employees, or just general inefficiency, I have yet to meet a single person who doesn't mind the trip. Just look at all thos ...more

While Apple Maps didn't receive as huge of an update on iOS 17 as other apps such as Safari, Camera, Photos, Notes, Weather, and Messages, there are still some very important new features and changes you need to know about. The latest software update for Apple Maps adds a muc ...more

Messages is arguably the most important app on your iPhone, which is why it's always exciting when Apple pushes out new features for it. With the iOS 14 update, there a few critical changes as well as interface improvements and customization options that make the experience ev ...more

Apple just seeded developers and public beta testers the GM (golden master) for iOS 14 on Tuesday, Sept 15. The update (18A373) comes just after Apple's "Time Flies" event, and six days after Apple released iOS 14 beta 8 for both developers and public testers. Apple released ...more

According to Apple, Siri serves 25 billion requests per month — an enormous number for a feature that was only released nine years ago. But when you think about how much work Apple has put into Siri over the years, it makes sense that the virtual assistant is being used more a ...more

The private automobile has been an intrinsic part of our lives for around a hundred years. But over the last decade, car sharing has gained a very small but growing part of the mobility market. The more recent rise of companies like Uber and Lyft is witness to a more dramatic ...more

Siri can perform many actions for you on your iPhone, such as sending messages, providing information, getting directions, looking up a contact, and playing music. Still, there are even more important Siri voice commands that every iPhone owner should know — even the ones who ...more

Live Activities is Apple's hottest new feature for iPhone, but it's not always straightforward. Sometimes you'll trigger one without realizing it, but it may seem frustratingly impossible to start one when you really want it. What Are Live Activities? First appearing on iOS ...more

With the holidays right around the corner, it's easy to miss a big software update on your iPhone, and by that, I mean iOS 15.2, which was pushed out Monday, Dec. 13. There's a surprising amount of new features and changes in the updated firmware, and there are a few big ones ...more

Tony Parisi, the global head of VR/AR at Unity Technologies, has been passionately working with virtual and immersive spaces for a long time. And while the internet world we live in now is very different than when Parisi was co-authoring VRML (Virtual Reality Modeling Language ...more

In the music world, it's safe to say electric instruments are more versatile, but they lack the portability of their acoustic counterparts. However, with the aid of your smartphone plus an audio interface, you can play your electric instrument anywhere — with all the pedal eff ...more

It would only make sense that Google is one of the most active app developers on the Android platform, particularly when you consider that they develop the platform itself. From my count, there are an astounding 117 unique apps that the search giant and its subsidiaries have p ...more

I have a personal rule when it comes to an app's interface: If it doesn't follow Android's design guidelines, it was probably written with Apple's iOS in mind first and foremost. And if that truly is the case, I almost take this as a personal insult. I'm not a second-class ci ...more

Welcome back, my fledgling hackers! In an earlier tutorial, I introduced you to probably the most popular scripting language for hackers, Python. To become a professional hacker, you need to have some scripting skills and Python is a good choice if you want to master just one ...more

Surveying a target's Wi-Fi infrastructure is the first step to understanding the wireless attack surface you have to work with. Wardriving has been around since the '90s and combines GPS data and Wi-Fi signal data to create accurate, in-depth maps of any nearby Wi-Fi networks ...more

The launch of Android 4.1 Jelly Bean was also the launch of Google Now, a service that was supposed to one-up Siri, the resident personal assistant for iOS devices. Google Now offered enticing features, but its launch went unnoticed by a great many Android users. But that was ...more

Whether you want to give a gift that your loved one has wanted all year or one that they never even knew existed, there's something awesome for everyone in these gifts. Just as exciting as their innovative features is their price. We've found the best deals on gadget gifts fo ...more

The gig economy is thriving, and if you aren't already making money with your phone, you could be missing out on easy residual income. Some people just want extra cash, and some even manage to completely ditch the 9–5, enabling them to work at their own pace and set their own ...more

SharePlay is arguably one of the most significant features to hit FaceTime since group calls, and it's still hard to find apps that support shared experiences in FaceTime. Apple does list a few apps, but there is no official index of all the apps with SharePlay integration. Th ...more