Swarm/Foursquare I believe solve this problem by tracking the time between check-ins and then consider the distance between the places you've checked into and h

Swarm/Foursquare I believe solve this problem by tracking the time between check-ins and then consider the distance between the places you've checked into and how long it would take to travel between them. You can't check into a store in New York Times Square one minute and then the next minute check into a place in Los Angeles. Sure you can lie, but with this restriction and restrictions around how frequently you can check in and other levers they have made a high quality experience that works for what they want to do.