Volumes have been set forth on this matter, and the contention and interchanges about where the "hot" one armed bandits are located in a casino are still ongoing – over 60 years after slot machines were 1st placed in gambling houses.
The quintessential rule is that the very best slot machines were installed just inside the main entry of the casino; so that potential players passing by would be able to see jackpot winners and be mesmerized enough to come unto the gaming floor … play. Our persuasion is that this is definitely no longer true.
The great majority of the large casinos today are oversized complexes and you can no longer see inside from the sidewalk, so there’s no longer a reason to position the ‘loose’ slot games near any entrances or exits.
An additional standard rule is that loose one armed bandits are positioned on the major aisles inside the casinos, again so that more potential gamblers could see winning jackpots and be energized to play. Importantly however, 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 very 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!
In recent times, casinos are constantly changing their perspective about where to place the loose slots.