When a caller grants consent to be enrolled into voice authentication, a unique identifier is needed and a one-to-one ratio between an identifier and a voiceprint is mandatory.
This means the identifier must be unique to a caller per Talkdesk instance.
How can I set up a unique identifier for my callers?
The unique identifier can be any variable that either already exists or can be brought into Talkdesk Studio.
By default, the system will use the caller's phone number as the identifier, but that variable is fully configurable, meaning it can, for example, be obtained from an external system, such as a CRM or an IDP.
Can a four-digit pin be a unique identifier?
No, those are not unique identifiers since they are arbitrary numbers and several callers can end up with the same pin.