This looks to be a neat little App and/or party trick. Knock is a new iOS and Mac App that running together allow you to simply knock on your iPhone to securely unlock your Mac. Using Bluetooth 4.0 technology the process can save you a few keystrokes when it comes to logging into your Mac. The two Apps pair together specifically, creating a secure connection. Even more interesting you don’t have to open the Knock App on your iPhone for this to work.
One of the supposed Holy Grails of mobile computing is to be able to use your smartphone to eliminate passwords simply by making your smartphone your password, in a manner of speaking. Because Knock is use Bluetooth 4.0 Low Energy it shouldn’t be a drain on your battery.
The Knock iOS App will cost you $3.99 and the Mac App is free and can be downloaded from the Knock website. You can perform the party trick that the Knock iOS App offers with the following Macs that use Bluetooth 4.0:
- 2012 Mac Pro or newer
- 2012 iMac or newer
- 2011 MacBook Air or newer
- 2011 Mac Mini or newer
And yes, I resisted using a Knock-Knock joke to begin this post.