QR codes are so popular that nearly every device with a camera lets you scan them. Here's how to do it with your phone, tablet, or computer.

TECH How to scan a QR code with your iPhone or Android phone (no apps needed) QR codes are those pixelated squares you see in restaurants, advertisements, stores, food packaging, business cards ...

I'm looking for a combination of Android tablet and app that will unlock, open a scanner app, take a photo to scan, and then open the resulting URL in a browser in the shortest amount of time ...

You should be vigilant when it comes to QR codes, but don't be afraid to scan them.