Back in 2008 I have blogged (<a href="http:&#x2F;&#x2F;pilif.github.io&#x2F;2008&#x2F;05&#x2F;why-is-nobody-using-ssl-client-certificates&#x2F;" rel="nofollow">http:&#x2F;&#x2F;pilif.github.io&#x2F;2008&#x2F;05&#x2F;why-is-nobody-using-ssl-clien...</a>) about client certs. The UI around them is horrendous and they also serve as a very good solution to uniquely identify clients across sites. This was a good idea, but in its current implementation it&#x27;s unusable.