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Ask the Slot Expert: Do Casinos Mark Money with a Pen?13 February 2013
By John Robison, Slot Expert™
The dealers were not marking the money. They were checking it to make sure it was not counterfeit.
The pens contain an iodine solution that reacts with the starch in wood-based paper to leave a black mark. Genuine currency is printed on linen. The solution does not leave a mark on linen.
You can buy your own currency validation pen from an office supply store.
Jackpots for all,
First answer: I checked Wolf Video Poker and Video Poker for Winners and neither have been enhanced to handle 6-coin machines. To calculate the long-term payback for the paytable, enter 5/6 of the 6-coin payout into the 5-coin payout column and calculate the long-term payback when playing five coins at a time. Another option is to enter 1/6 the 6-coin payout in the 1-coin payout column and calculate when playing one coin at a time.
Second answer: I don't think I ever used the phrase "time on device programming." It would be illegal in the United States to start paying off once you were about to run out of credits to give you more time on the device. The result of each spin or hand must be determined at random without any regard for what has happened in the past and without any external influence, like how much money the player has on the credit meter.
Machines with higher hit frequencies tend to give players more time on device. There is no programming involved. Video slots usually have their reels laid out so they have many small payouts. On Jacks or Better, the high hit frequency is just a consequence of the game itself. We frequently hit the lower-paying hands.
Jackpots for all,
Send your slot and video poker questions to John Robison, Slot Expert™, at email@example.com. Because of the volume of mail I receive, I regret that I can't reply to every question.