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How To: Protect Individual Apps on Android That You Can Only Unlock with Your Face

Locking individual apps on your Android device gives you an added layer of security by safeguarding app data from unwanted attention. I personally prefer using an app locker over a standard lock screen because my kids play with my phone, and they've completely disabled it after inputting the wrong PIN. So app lockers give me the right balance between giving my children access to my device, and the security of locking down my data from would-be intruders.

How To: Theme Marshmallow with Android's Hidden Theme Engine

Not too long ago, Sony was looking to create a method for theming the interface of their Xperia smartphones and came up with a framework called Runtime Resource Overlay (RRO). They then contributed this framework to Android's main code base, and Google has since taken over the development of RRO as a way for manufacturers to implement themes in their skinned versions of Android.

How To: Add Self-Generating Captions to Your Instagram Stories So You Don't Have to Type Them in Manually

When creating video content for social media, such as a story on Instagram, it's common practice to add captions or subtitles to the post so that people can watch it wherever they are on silent. Doing this by hand is time-consuming and frustrating, but Instagram has a solution: a feature to add automatically-generated captions to any story you make from your iPhone or Android phone.

How To: Record Video with Two Cameras at the Same Time on Your iPhone

The iPhone 11, 11 Pro, and 11 Pro Max introduced a new rear camera system to the iOS ecosystem. Each model has a new ultra-wide lens in addition to the wide one, and the Pros have a telephoto lens. Both have improved selfie cams too. With so many lenses, it can be challenging to choose which to film with, but why pick when you could shoot with two at once?

Snapchat 101: How to Make Your Own Custom Geofilters & Lenses

Snapchat is in the midst of a massive redesign — one that not everyone loves. Still, it's clear that this is a decision fueled by money, and Snap Inc. believes this redesign will help attract more advertisers. Even so, Snapchat has a few more tricks up their sleeves to make a little extra dough. And while the average user couldn't care less about ads, they very easily could care about custom Filters and Lenses.

HoloLens Dev 101: How to Use Holographic Remoting to Improve Development Productivity

Way back, life on the range was tough and unforgiving for a HoloLens developer. Air-tap training was cutting edge and actions to move holograms not called "TapToPlace" were exotic and greeted with skepticism. The year was 2016, and developers had to deploy to their devices to test things as simple as gauging a cube's size in real space. Minutes to hours a week were lost to staring at Visual Studio's blue progress bar.

How To: 3 Ways to Unlock Your Samsung Galaxy S8 Faster — Without Using the Fingerprint Scanner

A great many S8 and S8+ users have undoubtedly spent quite a bit of time figuring out ways to unlock their new Galaxy in as few steps as possible. One of the most endearing features of previous Galaxy models was the ability to unlock the phone by pressing the home button and momentarily leaving your finger there for the sensor to do its job, almost instantaneously opening the device — all without having to pick up the phone.

HoloLens Dev 102: How to Create an ImageTarget with Vuforia & Set Up the Camera System

Now that we've set up Vuforia in Unity, we can work on the more exciting aspects of making physical objects come to life on the HoloLens. In this guide, we will choose an image (something that you physically have in your home), build our ImageTarget database, and then set up our Unity camera to be able to recognize the chosen image so that it can overlay the 3D holographic effect on top of it.

Gadget Hacks' Wish List: Features We Want in Android N

Whatever you want to call it for now—Android Nutella, Android Nougat, or Android 7.0—the upcoming "N" release of Android will surely bring in tons of new features and functionality. We know it will be named after a dessert, and we know that Google uses an alphabetical naming system, so something starting with "N" is next in line after Android 6.0 Marshmallow.

How To: Take Better Photos with Your Phone

It's truly amazing how far smartphone camera hardware has come in such a short period of time. It took roughly 5 years to advance the image processing capabilities from a pixelated mess to the crisp and clear photos we can take today. This reaches well beyond the megapixel spec race, since camera modules these days sport vastly improved optics, wider aperture, and even larger pixel sensors that capture more light.

How To: Add Dissolves, Wipes, Fades & Other Video Transitions in Enlight Videoleap for iPhone

An edited video with lots of different clips needs great transitions to be successful. Transitions support your story and message, and without any, there's always a chance that your audience might lose track of what's going on and when. When editing in Enlight Videoleap for iOS, you can easily add cut, dissolve, iris, wipe, slide, and fade transitions to your video clips with just a few taps.

How To: Hijack Chromecasts with CATT to Display Images, Messages, Videos, Sites & More

Giving up your Wi-Fi password can be giving up more control than you think. Because of the way Chromecast and other IoT devices communicate, anyone on the same Wi-Fi network as your device can often make it do whatever they want. With a script called "Cast All the Things," we can hijack a Chromecast to play nearly any kind of media with a single command in terminal.