If any Policeman have the knowledge on iGO they would also know the autorad system:

The camera settings are activated in the dragmode by long pressing on the bottom right button "Save Favorite"
so you wouldn't have a chance......

The Panic Button should also have the option to exit the navigator, (it's a proposal for Pongo), they could not pick up the phone and avoid all the Apps that are installed, not even that you were a terrorist, it would be abuse of power.