Unlock your desktop by BluetoothPosted: December 22, 2014
Use BlueProximity utility to make your computer feel your presence and run certain commands on you (your Bluetooth-enabled smartphone, to be precise) either approaching or leaving it:
sudo apt-get install blueproximity
Make sure you do have gnome-screensaver installed, if you want it to lock/unlock your desktop:
sudo apt-get install gnome-screensaver
After configuring the BlueProximity you may add or replace the commands it runs as you wish. Use semicolon to separate individual commands (just like in bash).