This tool enables the unlocking and locking of a Mac computer via Bluetooth devices on macOS. No applications need to be installed on the Bluetooth device for it to work. When the Bluetooth device is in proximity to the Mac, it can unlock the screen and wake up the computer; whereas, when the device is out of range, it automatically locks the screen and pauses video or music playback. It supports devices like iPhone, Apple Watch, and Bluetooth earphones.