Books have been written on this item, and the contention and discourse about where the "hot" slot machines are positioned in a casino are still bubbling – more than sixty years after slot machines were 1st installed in gambling dens.
The standard rule is that the very best slots were put just inside the main entryway of the casino; so that fun seekers passing by would be able to see jackpot winners … be baited to come unto the gambling floor … play. Our deduction is that this is no longer true.
Most of the large casinos presently are massive complexes and it’s no longer possible to see inside from the sidewalk, so there is no longer a reason to have the ‘loose’ one armed bandits in close proximity to any exits.
An additional classic rule is that loose slot games are located on the major aisles in the casinos, again so that more fun seekers could see winning jackpots and be encouraged to play. Nonetheless, we find that this also isn’t a universal rule any more.
What casinos found over the years is that people walking down the busy aisles were frequently on the way to somewhere else. If they played the slot machines at all, they would simply put in their loose change because they happened to be walking by. Win or lose, they would very often not stop to keep playing. And the last thing a casino wants is for someone to win a jackpot by playing only a few coins and then not stay to put it all back in!
Today, casinos are constantly changing their philosophy about where to place the loose slot machines.