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

WhatsApp now enables you to add a new contact using just a QR code. This avoids you having to manually enter a person's phone number into your contact list before you can send them a message. Learn ...

Not all smartphones require a third-party app to scan QR codes. Kurt "CyberGuy" Knutsson shows you how to scan codes using iPhone or Androids.

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.

Apps, techniques, and tricks you can use to scan or create QR codes on Windows Phone.