Google Authenticator
A 3rd option is to use “Google Authenticator” which is an app some people may have already. If you choose that option, you need to use that app to scan the QR code, and ask you to enter the code that appears after scanning the barcode:
After that it will let you through to Doctor Portal, and each time you log in, you will need to enter the 6 digit code generated in Google Authenticator.