Disclosed are methods and apparatuses for creating a verified mutually authenticated transaction between a service provider and an on-line identity for a physical client person. A dynamic optical mark may be displayed on a device screen where the physical client person is using a web service. The dynamic optical mark may be recognized via scanning the dynamic optical mark by a personal mobile device equipped with a camera. The verified mutually authenticated transaction between the service provider and the on-line identity for the physical client person may be used for sharing personal data of the physical client person by using out-of-band optical mark recognition of the dynamic optical mark. The verified mutually authenticated transaction may be initiated with a time-limited one-time password comprising a sequence of numbers encoded in the dynamic optical mark.