A unique coffee shop in Valley City, North Dakota, has zero staff members and relies completely on the honor system. 

"The thing that's amazing is that people have been extremely honest," co-owner and operator David Brekke told KVRR. "When I add up how much has been taken and how much is in the till at the end of the day…people are 15 percent more generous than thieving." 

Click here for the video.