...and they know where you have been.

People using a mobile phone (should) know this. Mobile Service Providers know everything about your moves, when you have your mobile phone with you.

At the last festival i have been there was a trailer of a shop where they sold t-shirts and other stuff every time i walked by this trailer i got a file sent via bluetooth. Also the festival it self had a mobile guide which showed you your exact position and what’s around you. They were able to track everyone. Mobile Service Providers (in Austria) are allowed to process this data, under a few conditions (see TKG 2003 ).

I guess even if they don’t know your mobile phone number, they are able to track you mobile phone and can track every step you do.

In some cases it can also be helpful for you, imagine you have an accident in the mountains and you are alone and can’t exactly tell them where you are they just enter you phone number and within seconds they have you position. Technorati Profile