Prophyles creates the most comprehensive profiles summarized, organized by topics, presented in tabs, and accessible in multiple ways in shortcuts. Every user has his/her own comprehensive profile that includes Personal Information, some of which is stored in our private blockchain. Users connect with each other by sharing a specific virtual card that represents one of their personas. When users exchange their respective virtual card, a link is established between profiles.

Read more about it here:http://prophyles.com/blogs/Comprehensive_Profile.html