Safe Quality Slot 724393791428354514
A whole lot has been written about the honesty of land-based slot machines. An excellent article by Steve Bourie is titled, "Are Slot Machines Honest?" and originally appeared in the 1999 American Casino Guide. (It may be found online by searching for the title in Google or Yahoo!.) Physical, land-based slot machines have a whole lot of "variations" (being polite) than can deceive the player. Simply, they're all illegal and do not happen. But read the article, closely.
Alternatively, online casino slots use an electronic "random number generator" or RNG, operating inside a really large computer program that manages the game graphics, the player accounts of those who join the game, the statistics of every hand played, and even more. The random number generator is hard-coded software instructions that don't change. There's no "sense switch" (see the Bourie article) that will be flipped to give players worse odds. Regarding control parameters, each usage of the RNG is equivalent to the last use, and also will be the same as the next use. The numbers will come out randomly, but the pattern of randomness never changes. This really is a true benefit from software-based safe online gambling agency (my response) casino slots.
Land-based slot machines could also have payout percentages as little as 83%, which isn't true with online casino slots. In online gaming, each machine has the same winning percentage as the other machines. You may see the payout percentages for many online gaming sites, and you shall see which it rarely drops below 95% - that's, the house makes a 5% profit, on a typical. The truth is, most casinos can document that their payout percentages are within the 97% - 98% range. Consequently you may spend per hour, gamble your $100 stake about 3 times, as well as on an average it's going to cost you $7.50. But players don't gamble to be average: the true reward is the well-paying win. And the well-paying win is balanced, of course, by a number of players who lose and finance that win.
So are online casino slots fair? Yes, they clearly are. The software that operates the games is tested regularly by independent testing laboratories (look for logos at the bottom of the casino website), and no game is individually controllable to be biased. Which is a far cry from the specific situation with land-based slot machines, appropriately called "one-armed bandits".
Players get better odds, they get absolute consistency across all games - but no one can guarantee a win every time. That's just the nature of gambling, and that's a division of the thrill.
So the next time you want to play a slot machine, even when there is a land-based casino right next door, you are better advised to go to your computer and play the internet casino slots. They are a far better bet.