Check-Ins

There is bug, the Check-Ins list doesn’t recognize that I have already add some movie, and it can add one movie for as many times as I click. Please solve this, because I want to add all movies I have seen in this list, not to add it multiple times. Please create something like for ‘Watchlist’ box under the movie title, so that people can see, if they have add this movie in their check-ins, or some other list already..