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 ...

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

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 ...