For the very first time, user needs to login the app using his username/password with which he has been registered by the admin. Now, in the background the app will send the current location of the user (only if user has provided the permissions for accessing his location).
He will now be directed directly to the Scanning page, where he will be able to scan the QR Code, pasted on the pads, tanks or well, on scanning , app will send the data received by the QR Code to the back-end, and a verification response will be returned to the app in background, on the basis of that response, user will either be directed to confirmation page, or to the Error message page