I don’t cheat or check up on people.  If you think the man in your life is cheating on you, regardless of whether or not he is, you feel that way because you know there’s a problem in the relationship.  You won’t solve it by spying on him.  Personally, I think the need to know the whereabouts of another human being 24 hours a day is dangerously jealous and insecure unless you happen to be a police officer investigating a crime.  If I found out someone was doing that to me, I’d leave for my own protection, but not before I parked that car at every bar in town just so I could make sure he had a good story to tell while he filled his time without me.