iOS iPhone mobile development usability

Knock iPhone App Wirelessly Unlocks your Mac

A new app called Knock allows users to unlock their computers without a password. For $3.99 Knock allows a Mac to be unlocked just by knocking on a paired iPhone. The two devices connect over Bluetooth LE, allowing a phone to automatically detect when it nears a paired computer. Though the knocking effect can also be achieved by waving an iPhone in the air, Knock suggests just tapping on it through your pants’ pocket, so you never have to pick up the device.

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