Books have been stated on this item, and the controversy and arguments about where the "hot" video slots are positioned in a casino are still bubbling – over 60 years after slots were first added to the gaming floor in gambling dens.
The standard rule is that the most favorable slot machines were installed just inside the main doorway of the casino; so that persons passing by would be able to see jackpot winners and be aroused to come unto the gambling floor … play. Our belief is that this is definitely no longer the case.
Just about all of the big name casinos presently are enormous complexes … it is not possible to see inside from the sidewalk, so there’s no longer a reason to have the ‘loose’ one armed bandits in close proximity to any doorways.
An additional classic rule is that loose one armed bandits are installed on the major aisles inside the casinos, again so that more potential gamblers could see winning jackpots and be motivated to play. Notably though, we find that this also is not 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 slot games 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!
Nowadays, casinos are constantly changing their philosophy about where to place the loose slot machine games.