With a little casual hexadecimal memorization and pattern recognition skill, you can become a QR code-reading machine — no pesky computer required! The black and white boxes represent binary 1s and 0s ...

To scan QR code on Android, open the Camera app and position the QR code within the frame. If that doesn't work, you can use the Google Lens feature in the Google Search app. Once you've scanned a QR ...