Knock – unlock your Mac without a password using your iPhone and Apple Watch


Description of App: 

Faster and safer than typing a password, for iOS and Mac.

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.

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.

Knock works with any Mac that supports Bluetooth 4.0.

Apple Watch Support: 

Not Known



Free or Paid: 


Device(s) App Was Tested On: 


Accessibility Comments: 

The setup process has some unlabeled buttons but if you've ever installed a Mac app before you will know what to do.

VoiceOver Performance: 

VoiceOver reads a few page elements.

Button Labeling: 

No buttons are clearly labeled.


There are some minor accessibility issues with this app, but they are easy to deal with.

Other Comments: 

Knock for iPhone lets you simply knock on it to unlock your mac.You will need the iOS app and the Mac app obviously. The set up process has unlabeled buttons but it's very simple to accomplish. Once you set the two apps instead of typing your Mac login password you will get a notification on your phone telling you to knock on it. Knock and you're logged in! Like I said, none of the buttons are labeled but once you get it set up you don't have to open these apps to get them to work. All you do is knock and everything else happens in the background. I've been using it reliably for a full day now with no issues.

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