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.

How to Look for Android Apps by Scanning QR Codes. Installing new apps for your Android device is easy: launch the Android Market application, search for an app and install it.

Google has finally started rolling out Android's redesigned QR code scanner — a year after we first spotted it in a teardown.

QR codes are a great way to relay a lot of information in a small space and your Android phone has multiple ways to read them. Here's how to do it.