That's how it works, just searches the page for the pgp messages. It checks for messages on DOM changes.
FireFox on mobile enables add-ons, so it would work on desktop or mobile if I wanted to do that. However, this was more of a proof of concept. It worked and works well with friends, but we no longer use it all that much.
FireFox on mobile enables add-ons, so it would work on desktop or mobile if I wanted to do that. However, this was more of a proof of concept. It worked and works well with friends, but we no longer use it all that much.