When you drive by a billboard on the highway, is it invading your privacy?

Possibly?

Let me rephrase it a little- When you walk past a digital advertising screen at a Westfield Shopping Centre - is it invading your privacy? (The answer is a definite YES, they have facial tracking and keep metrics on where you go in the mall, how long you loiter in certain locations, what stores you go, whether you came back out with bags, etc)