Giant Rotting Fingers Count Down to Walking Dead's Return

Toronto's Union Station has been graced by this cool "zombie hands" installation for The Walking Dead that loses a finger every day until this Sunday, when Season 3 returns to the air. I wonder who's in charge of removing the fingers. Does the agency make some intern walk down there every morning and do it, or is it some Union Station janitor's responsibility? I also wonder who's in charge of calming down any children who happen to walk past.