I run the snack bar at my school, and the latest shipment of about 100 Pepsi and Sierra Mist bottles had the iTMS contest on them. Anyway, I hand picked the winners ( 25 in all ) and seperated them from the others. Whenever someone from the cosmetology class comes by ( Most of them wouldn't even know what a computer is ), I offer them a "Garunteed Winner" Pepsi. Even if they didn't want a Pepsi, they will still buy one. All of these bottles are still warm ( I intentionally didn't refrigerate them ), so I also get them a cup with ice and pour the Pepsi in it. In this whole process I write down the code. They get their "winning" bottle, and I get the code.