Mark Hudnall

Hi, I'm Mark 👋.

I'm interested in technology – how we use it and how it shapes us.

I'm the CTO of Clef, a security company based in Oakland, CA. We log you in to websites using digital signatures instead of passwords or one-time tokens.

When I'm not doing that, I climb rocks, read books, and enjoy programming as a hobby. Lately, I've been making things with Swift and Clojure.

Elsewhere