Here's a new finding
(thanks to paniccode too !)
Jaan Saar has programmed a mobile surveillance application during the Mobile Interaction Concepts and Technologies course given by Jürgen Scheible.
The basic concept of the application is to take pictures and listen-in remotly using only 2 mobile phones. The phone used as the surveillance phone has to be a Nokia S60 model running Symbian with Pyhton installed in order for the script to work. The remote phone on the other hand could be any "dumb" phone which has basic browsing capabilities so that you could see the surveillance photo.
You need also a php script on the server side
links where you can find php and pys60 scripts :