"I got on pickpocketed on my last vacation, so now I travel with an old backup phone instead"
That kind of history is already being collected about people. That’s what you should be worried about when it comes to engineering some scheme that sounds clever.
the reaction you provoke at a border crossing, or an LEO encounter is almost entirely based on what profile you fit.
the vehicle, the state/contents of the vehicle, what you say, even how you move, are being evaluated for consistency with a profile.