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 ...

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.

Your Android or iPhone can probably already scan QR codes. Here's how to do it no matter what phone you have.

Need to open a menu on your phone or sign into an app on your tv? You can use your Samsung Galaxy phone to quickly scan QR codes.

Some developers would lead you to believe you need to download their app to scan QR codes. Spoiler: Your phone can do that with built-in features.