Use Your Bluetooth Cell Phone as a Proximity Card for Linux Box

Have you ever wished your computer would keep track of your comings and goings and secure itself accordingly? Odds are good that if you have a newer laptop and cell phone you can do just that. Many laptops now come with Bluetooth and most phones now support Bluetooth as well. This can allow your computer and cell phone to “talk” and create a simple proximity badge for you to use. Here you’ll find the information to setup the connection between the two and then have your laptop lock itself when you’re away.  This has been tested for Ubuntu, Fedora and SuSe.  It should work for other flavours as well with minor tweaking.

http://www.goitexpert.com/entry.cfm?entry=Use-Your-Bluetooth-Cell-Phone-as-a-Proximity-Card-for-your-Laptop