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.

QR codes are links that can be scanned using various smartphone apps. You'll find our favorite apps for scanning QR codes for both Android and iPhone.

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 ...