It was a federated system. The idea was more or less that your email provider would host an instance of Persona, and if you were logged into webmail you could b

It was a federated system. The idea was more or less that your email provider would host an instance of Persona, and if you were logged into webmail you could be logged in anywhere with a click or two. But nobody used it. No email providers, no websites. You could fall back to Mozilla's Persona instance to try it out, but the user experience was not amazing. It kinda fizzled out. https://wiki.mozilla.org/Identity/Persona_AAR https://wiki.mozilla.org/Identity/Persona_AAR