Today advertising looks something like this: - You go to a shop and ask for information about what kind of tires they have - A spotter sees you and phones the

Today advertising looks something like this: - You go to a shop and ask for information about what kind of tires they have - A spotter sees you and phones the ad company that you were seen at such and such store asking for tires - The ad company already knows where you do usually walk and what time - They send agents with tires on billboards who follow you on the way to work and back and whenever you look they try to shove a banner in front of your eyes, sometimes even slowing you down as you try to walk past them I am pretty sure if they did exactly the same as they do online, but offline, that would be illegal (stalking for starters)