On Tue, Nov 26, 2013 at 3:47 AM, Luke Howard <lukeh at padl.com> wrote: > Because Persona doesn't actually require the subject to be a reachable e-mail address, I'd suggest acct: instead (see draft-ietf-appsawg-acct-uri-01) for the latter. Using "browserid:" was also proposed, and seems neat to me. Cheers, Dirkjan