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.

Use the built-in camera app on your Android device to scan a quick response (QR) code, or use a code scanner on older models.

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.

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.

QR codes can be really handy. A grid of seemingly random black-and-white squares can hold enough information to store website URLs, contact information, email addresses, pre-defined SMS text ...

QR codes are easy to use, if you know how to access the information they contain and have an internet connection.