HOW TO Unlock your Mac using your iPhone and MacID
1 Install the Mac app
Download, install and then open the Mac component of MacID from macid.co. It requires OS X 10.10 and a Mac that supports Bluetooth 4.0.
2 Get MacID for iOS
Install MacID (£2.99) on an iOS device with Bluetooth active. If you also have an Apple Watch, you can install MacID using the Watch app.
3 Pair your iOS device
On your Mac, MacID should list your iOS device. Select it and click Continue, type your user account’s password, then click Continue again.
4 Secure your Mac
In Security & Privacy > General in System Preferences, set your Mac to require a password to wake from sleep or after its screen saver starts.
5 Unlock your Mac
Try to unlock your Mac; MacID sends notifications to your devices. Unlock it with a tap (Watch), or a swipe or using Touch ID (iPhone).
6 Take it further
On iOS, you can use MacID to lock your Mac from afar. On Mac, use the app’s menu to set up Sierra-like proximity-based locking and waking.