If my memory serves me correctly, I beleive there was a way to intercept bluetooth frequencies or something... I remember reading that bluetooth is very insecure... Can anyone confirm this?
Hi there The Duck to answer your question just do a google search for the following :

[1] Bluejacking
[2] Bluesnarfing
[3] Bluebugging

Serious flaws in bluetooth security lead to disclosure of personal data

some interesting stuff indeed ....