Currently we have only provided email address option through which candidates are able to login and admin user can analysis reports at his side.
"The feature you asked is in our Product Enhancement list. We keep on deploying new features on a quite frequent basis. We'll try to implement the feature you suggested in our upcoming releses.
Please follow-up with our latest releases, and thanks for approaching us"
And please feel free to suggest such suggestion that can be added in roadmap for implementation.
Kaldin Support Team,
Phone: +1 (303) 500-8025 (USA)