Can you track someone's history on an Iphone 3G?

My mom is trying to scare me i think.

She says she has my iphone synced to the computer and she can check and see EXACTLY what I did and when.

Note that I have a passcode on it - to my knowledge she doesn't know what that is

It also doesn't have service on it - so its basically an ipod running on Wi-Fi…

Can she really do that?
I think she's lying.

Added (1). How can you tell if you have one?

And how to rid of it?

Only if she or you have installed an app. Check out the sites below to see what I mean.