How to Scan a QR Code

How to Scan a QR Code

If you are wondering how to scan a qr code with your phone, use this quick flow: 1) Open your camera (or a built-in scanner), 2) Point it at the QR code until a result appears, 3) Tap the banner or on-screen prompt to open it. If it fails, fix lighting, focus, and...
How Many QR Codes Are Possible?

How Many QR Codes Are Possible?

The answer depends on what you mean by possible. If you count every black/white module pattern on a QR grid, the number is 2^(number of modules), which is astronomically large for higher versions. If you only count valid, decodable QR codes under the standard, the...