You used to need a third party app to scan QR codes, but now the feature is built right into iOS.

Best iPhone QR Code Reader App The free Quick Scan – QR Code Reader is a full-featured app that can read QR codes out in the world and from images in your photo roll.

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.

QR codes can house a whole lot of data, from the URL of a webpage or service, to where to directly download an app. Here's how to scan them.

Ever wonder what those weird black-and-white square codes are? Here's how to read them with an iPhone, a BlackBerry, or an Android smartphone.

Can you scan a QR code from a screenshot or photo? Yep, you can.