> users can move from application to application, keeping their data (and their login credentials stored in their wallet) as they go "Keeping their login crede

> users can move from application to application, keeping their data (and their login credentials stored in their wallet) as they go "Keeping their login credentials in their wallet" was already possible a long time ago with client-side TLS/SSL certificates. But web developers didn't want to change from the classic implementation of plaintext passwords. Porting personal data from one service to another is a problem, so I'll give the author a point for that.