Thanks! I think part of the vision for this technology is that since primary key for people's identity (or identities!) to tie to together parts of their identity across different platforms and services.
Google, Facebook, etc have tried to do this before, but it never works because their business concerns always get in the way of the technology.
Imagine Facebook agreeing to make Google Accounts their primary key for their userbase. It wouldnt even happen over Zuck's cold dead body - would be a horrible business decision.
Passcard is in the blockchain and the only ownership is people owning their identities, so anyone can build on it...just like I built Nametiles!