[kaffee]

Why not take this all the way? Why require e-mail and/or cell phone?

You could also distinguish yourself vis-a-vis persona which requires an e-mail address.

[depoll]

You're exactly right. We don't require email addresses or phone numbers to be requested from users by apps. Those are just ways to get and verify a Hoomi account. Once a user authorizes an app, the app only gets a stable, unique identifier (unrelated to the email address or phone number on the account).