the purpose of the hga is to gather, protect, and present the history of gaming. and so this allows us to give demonstrations of various types of, in this instance, things that are considered to be special work or cheating devices. and, if you see i take a magnet , here, i have a dice cube. it is what they call magnetic dice. it can sometimes also work in an opposite direction. this is a magnetized lead ball. as you can see, it will stick to the magnet. this is an unprocessed dice cube out of the 20's. and this cube here is very interesting because it is what you call a tap die. it has not been spotted yet, but you can see there is a mechanical device in the cube itself. by tapping the dice solidly against the table, it will shift the center part to one side of the cube to make it special. you can tap the opposite side to bring it back to fair. these records allow us to do research into various clubs and casinos that were operating throughout the united states. many of them, as we would put it, unlicensed, which is a different way of saying they were illegal. a lo