Steps:
Login to the Snap&Read app on your iOS device.
Tap on the Camera icon. (If prompted allow Snap&Read access to the Camera)
Use the camera on the QR code.
Tap on open the document from this QR code.
Or
Open the devices camera app
capture the QR code with the camera
Select open in Safari.
Select Open in Snap&Read.*
*If you are not logged into Snap&Read it will prompt you to login.