Knock. Use your iPhone as a password for your Mac.

Help / Company


  • Who's behind Knock?

    William Henderson and Jon Schlossberg make Knock with their bare hands. Not to be confused with bear hands. William is a weird guy who accidentally learned engineering stuff when he was a whippersnapper. Jon learned how to make websites to be better at it than that annoying kid who lived across the street.

    Nov 12, 2013 10:22AM PST
  • So... do you guys actually know what you're doing?

    We try not to take ourselves too seriously, but we've been around the block a few times. William created a secure mobile payments platform at Square. Prior to that he worked on Mac OS X at Apple. Jon directed the design of an ecommerce system for Bonobos that handles, well, a lot of money. Prior to that he worked on websites like and

    Nov 12, 2013 10:21AM PST
  • Are you hiring?

    Yeah, kinda. We're looking for an exceptionally product-driven engineer to join us as a cofounder.

    You might not trust your product instincts, but you align all of your technical decisions towards making the best possible user experience above all else. We've got no beef with engineers who don't do this-- you just won't jive well with what we're trying to do, and you'd probably find us annoying anyway. But if you're a full stack engineer who leans towards the server and what you really care about is building something people will use and love dozens of times every single day, shoot us an email.

    If you're someone else and you want in on this thing we're doing, we'd still love to chat, but you should probably read this first.

    Nov 10, 2013 11:13AM PST
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