There are more stories in the news today about people imitating cell phone towers in order to gather data.

Sometimes I travel and then who knows what tower I'm on. But usually I'm at home, at work, or at my girlfriend's house.

It would be nice if I could switch on a feature that would only let my device connect to previously approved towers.

I know my n900 can display cell tower information. Is there some way to use software to affect which towers it does or doesn't connect to?

That could then be expanded to a cloud (like Waze) where other users submit their trusted towers. Might not be 100% accurate but at least it's something.