When someone comes to your door, you might want to know who it is before you answer. Maybe your neighborhood is being targeted by salespeople, or maybe there are missionaries canvassing your neighborhood. Or perhaps you have more personal reasons to avoid a particular person. Peepholes have been available for this purpose for ages. And, …
These days, our smartphones provide a vital link to the outside world. And it’s not just about being able to make a phone call when you need to. More and more of our tasks are becoming impossible without our electronic devices. Want to keep track of your grocery list? There’s an app for that. Need …
In the past few years, cameras have gotten smaller and smaller. Now, small spy cameras have been around for decades. But they’ve traditionally been fairly low quality. You could wear one on your lapel and get grainy video that looked bad even on a CRT screen. But today, you can get quality, 1080p video even …
For most of us who grew up in the United States, the world is rapidly changing. With increased globalization and immigration, it’s becoming more and more frequent to encounter people who speak a different language. Of course, for our European friends, this has been true since before written history. And if you’re an American traveling …
In today’s world, we spend more time staring at LED screens than ever before. Let’s start with a sobering statistic: the average American spends 3.5 hours a day on their smartphone. That doesn’t include time spent at a PC, watching TV, or playing console video games. If you enjoy any of these hobbies, your screen …