They may not be directly comparable with Persona, but such things are widely deployed in academic&#x2F;research communities: <a href="https:&#x2F;&#x2F;shibboleth.net&#x2F;" rel="nofollow">https:&#x2F;&#x2F;shibboleth.net&#x2F;</a> (web-specific), <a href="https:&#x2F;&#x2F;www.eduroam.org&#x2F;" rel="nofollow">https:&#x2F;&#x2F;www.eduroam.org&#x2F;</a> (roaming wifi-specific in practice?), and &quot;e-science certificates&quot; in the UK (specifically horrible -- definitely not a beautiful thing) which I think come under <a href="https:&#x2F;&#x2F;www.igtf.net&#x2F;" rel="nofollow">https:&#x2F;&#x2F;www.igtf.net&#x2F;</a>.<p>The recent generalized effort is Moonshot&#x2F;ABFAB (<a href="https:&#x2F;&#x2F;jisc.ac.uk&#x2F;assent" rel="nofollow">https:&#x2F;&#x2F;jisc.ac.uk&#x2F;assent</a>), which I think has made disappointingly slow progress.