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

Stop typing your password.

Faster. Safer. Futurer. Knock to unlock.

Download or scroll to learn more

A faster, safer way to sign in.

You keep your iPhone with you all the time. Now you can use it as a password. You never have to open the app— just knock on your phone twice, even when it’s in your pocket, and you're in.

What if my phone is lost or stolen?

Stolen phone-proof

Lost or stolen phone? Simply sign in with your old-fashioned password and disable your iPhone with one click.

Hassle-free for you, and your battery.

Using Knock won't drain your iPhone's battery, even if you use it all day every day. Knock securely communicates with your Mac using Bluetooth Low Energy, a new technology that draws very little power.

Why should I bother locking my Mac?

This world be crazy

Did you know that an average person with no technical skills can get all of your usernames and passwords in less than 30 seconds, without doing anything illegal? See how

Compatibility

Knock works with all new Macs

and the iPhone 5S, 5C, 5 & 4S

  • 2011 MacBook Air or newer
  • 2012 MacBook Pro or newer
  • 2012 iMac or newer
  • 2011 Mac mini or newer
  • 2013 Mac Pro

Thanks for downloading Knock.
We think you're going to love it.