"Eye in the sky" cameras in Casinos observe players and prevent cheating.
Eye in the sky is a term given to casino security systems, which often are able to see every single table and every single seat in a given casino. Some systems can read the time on the watch of a player at a blackjack table.
The camera is covered by a semitransparent plastic envelope which makes it impossible to see the direction the camera is heading via distance.
| 
