There is an open source project wich claims to use a bluetooth phone as a remote control. I founded on plutohome.com and they are saying there they can have all your media and other stuff follow you arround the house, and it's supposed to give you alerts whenever there are security problems for example.
My problem is that this pretty new project support only the Symbian Series 60.
do you know if anybody has tested this on other phones? Because I'm trying to get something that runs on my n-gage.