Imagine quickly diagnosing why your car's check engine light is on. A scan tool, also known as a trouble code reader, can help you identify the problem yourself.

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.

Quick Scan QR Code Reader. This is also a convenient app for reading retail barcodes, though it usually requires you to watch a video advertisement before seeing results. Scandit Barcode Scanner.

It’s a snap to scan QR codes, because Apple built a QR code reader right into the camera. Simply open the camera app, hold the rear-facing camera steady so the QR code is clearly visible.

With just over 100,000 downloads, CertainTeed Corp. said its mobile QR code app is helping to simplify how architects, contractors, distributors, and consumers access information about the company’s ...

QR Code Reader & Generator / Barcode Scanner is another QR code and barcode scanner for Android with a host of features. The app makes creating QR codes and reading them on your Android device ...

Put simply, QR codes serve as an ultra-fast reference for something that someone can look up immediately on the spot, or at a later time. By using your cell phone and a QR code reader app ...

Want to scan QR codes on your Windows PC without using your smartphone? Here are three ways to scan a QR code on Windows 10 and Windows 11.