get
A verifier auth key can be set while generating a SensePrint QR code. If it has been set, then the SenseCrypt SDK will need to be initialized with the same verifier auth key.
Set this to the unique value that you will use while creating the SenseCrypt QR code that can be scanned by the SenseCrypt SDK
Leave this null if you do not want to use a verifier auth key When this is null, any verifier with an unset verifier auth key will be able to use the SenseCrypt SDK