Gets the visitor identifier.
See the ERROR_...
constants for expected error messages.
When an error is emitted by the backend, it gets a requestId
field, same as in successful result.
The TypeScript TIP
parameter does nothing and is left for backward compatibility. It will be removed later.
Optional
options: Readonly<FingerprintJSPro.GetOptions<TExtended, TIP>>
Agent object that can get visitor identifier