substack/persona-id — pull request #3 by zaach (2013-09-12 00:14:12+00:00)
Title: pass parameters to navigator.id.request to customize Persona dialog

This would allow you to brand the dialog with your site name and logo, specify tos, privacy, etc.

https://developer.mozilla.org/en-US/docs/Web/API/navigator.id.request#Parameters