1) Open the Camera app on your Android device, either from the lock screen or tapping on the camera icon from your home screen.
2) Hold your device steady for 2-3 seconds towards the QR Code.
3) No need to hit the shutter button, your Android device will automatically recognize the QR code and provide you with an on-screen notification: (View QR code details) or similar.
4) Tap the notification to be taken to the destination of the QR code.