I've been reading this with some interest, i'd like to just attempt to clear up if there is any misunderstanding on the idea of compensators
In the UK (i dont know about the US) all gaming machines are legislated by the Gambling Commision:
These machines are categorised:
https://www.gamblingcommission.gov....ine-categories/Gaming-machine-categories.aspx
I have included A in these categorisations although it exists it currently is not allowed in the UK (unlimited stakes / payouts)
I have listed the manuals from the gambling commission for the categorised machines if anyone is interested in some extremely dry further reading.
A / B1 / B2 / B3 / B4 / C / D / SWP
https://www.gamblingcommission.gov.uk/PDF/Machine-standards-category-A-and-B1.pdf
https://www.gamblingcommission.gov.uk/PDF/Machine-standards-category-B2.pdf
https://www.gamblingcommission.gov.uk/PDF/Machine-standards-category-B3-and-B4.pdf
https://www.gamblingcommission.gov.uk/PDF/Machine-standards-category-C.pdf
https://www.gamblingcommission.gov.uk/PDF/Machine-standards-complex-category-D.pdf
5.1 General requirement Where the outcome results in a player winning a prize, it must be determined randomly and in particular no compensator or regulator may be used to determine any stage of the game. The machine must clearly display to the player either at all times when it is in operation, or at the point a game is selected for play, the following statement: THIS MACHINE IS RANDOM
For categories B3, B4, C,
5.8 Use of compensators and/or regulators
The use of compensators or regulators to determine any stage of the game outcome is permitted, except in the case of ‘pre-gambles’, provided that the following rules are complied with;
a. each possible permutation or combination of game elements that produces winning or losing game outcomes must be available for selection at the initiation of each play.
b. the outcome of any gamble must not be predictable to the player;
c. cyclic periods of play must not be deliberately introduced and due care must be exercised to prevent their inadvertent occurrence;
d. the chance of winning a prize must not be so altered as to deliberately create a series of losing (raking periods) or winning games (enriched periods);
e. any sequence of wins must not exceed that to be expected from a random machine of a similar payout profile and running at the same payout percentage. A gaming machine or device must not present a losing game result which indicates a ‘Near Miss’, e.g. where the odds of the top award symbol landing on the pay line are limited it must not frequently appear above or below the pay line.
A compensated game must clearly display to the player on the face of the machine at all times (when in operation) or at the point the game is selected for play (where operated on a multi-game terminal) the following statement: THIS GAME IS COMPENSATED AND MAY BE INFLUENCED BY PREVIOUS PLAY
Where a machine operates in such a way that a particular feature (such as Hi/Low or gamble) may invite a player to make a choice in circumstances in which they have no chance of success (defined by the probability of a win being reduced to less than 20% of that required to achieve the target percentage payout) then the following statement must be substituted for the above: THIS GAME IS COMPENSATED AND MAY BE INFLUENCED BY PREVIOUS PLAY AND OFFER THE PLAYER A CHOICE WHERE THERE IS LITTLE CHANCE OF SUCCESS
For categories A, B1 and B2:
5.8 Not applicable to these categories of machine.
Category D (non-complex) generally refers to the "traditional" arcadey games such as the crane or the coin pusher.
SWP - Skill with prizes, obviously isn't a random game and is again included just for the sake of broadly recognising every category of machines.
Category A (unlimited/unlimited), B1 (£5/£10,000(£20,000 progressive)) and B2 (£100/£500) machines are true gambling machines with stakes and rewards matching, the hotly contentious category of B2 where the max stake is £100 is the one the future regulation is due to restrict down to £2 max stake. None of these have compensators and if they do are illegal in the UK.
B1 machines can only be made available in casinos so you must have either a
2005 Act casino operating licence or a
1968 Act casino operating licence to make them available.
B2 machines can only be made available in casino, betting shops or at tracks with pool betting. So you must have either a
2005 Act casino operating licence, a
1968 Act casino operating licence, a
general betting standard operating licence or a
pool betting licenceto make them available.
Category B3A is a lottery style game, does not contain a compensator and i don't think i have ever seen one personally
Category B3 (£2/£500) are allowed compensated games. They are only allowed in regulated areas
B3 machines can only be made available in casino, betting shops, tracks with pool betting, bingo halls or adult gaming centres. So you must have either a
2005 Act casino operating licence, a
1968 Act casino operating licence, a
general betting standard operating licence, a
pool betting licence,
non-remote bingo operating licenceor an
AGC licence to make them available.
Category B4 (£2/£400), C (£1/£100) and D (for the sake of simplicity i have left out the rewards in regards to non monetary games, 10p/£5) are also allowed to be compensated
Pubs and other alcohol licensed premises are automatically entitled to two category C or D gaming machines upon notification to the local licensing authority of their intention to make gaming machines available for use.
Licensing authorities can issue
gaming machine permits which allow additional category C and D gaming machines to be provided.
Where a gaming machine permit authorises the making available of a specified number of gaming machines in particular premises, this will effectively replace, and not be in addition to, any automatic entitlement to two machines.
Members' clubs and miners' welfare institutes may site up to three machines from categories B3A, B4, C or D (only one can be B3A) with a club machine permit. Commercial clubs may site up to three machines from categories B4, C or D (not B3A machines).
Travelling fairs may site any number of category D gaming machines.
Using all the information provided i'd like to point out that compensators do exist in the UK and are widely spread among the pubs and bars. My personal opinion of these are they are not true gambling machines and really represent nothing more than entertainment, as compensators exist on these you need to be aware of the potential of seeing far worse than average returns on your money, furthermore i would also like to point out that these are clearly labelled for that sake and for them not to be labelled as compensated would be illegal.
The machines found in licensed venues (B1 - casinos) B2 (commonly referred to as FOBT's) - betting shops & casino's) are not compensated and can be treated as pure gambling machines based only on their reported "house edge" (e.g. This machine pays out at 94%)
As all these things need to be clearly labelled and you now know the likely locations and minimum/maximums of each type of machine you should easily be able to identify and understand if the machine is compensated or not.
Because you now know that, the idea that compensation on machines needs to be further regulated is unnecessary as the player is already informed that they are potentially going to be playing at a worse than expected "house edge" as displayed on the machine if it is accompanied by the labels:
THIS GAME IS COMPENSATED AND MAY BE INFLUENCED BY PREVIOUS PLAY or
THIS GAME IS COMPENSATED AND MAY BE INFLUENCED BY PREVIOUS PLAY AND OFFER THE PLAYER A CHOICE WHERE THERE IS LITTLE CHANCE OF SUCCESS