I am going to be using two senors in this project. The first senor is a carbon monoxide senor. This will detect the smoke from the cigarette. This will then trigger the video to start playing. Once the video starts to play the second set of senors will start to act. These are webcams. They will pick up on the users face so that it will display the main piece of footage onto the wall the user is facing. If the user tries to turn away from the video their face will be picked up again.