It seems that in Great Britain at least, there is a way to "beat" certain slot machines.
This in no way implies that there is anything sinister or illegal afoot but according to some British gambling experts there is a method that you can use to discover "looser" machines.
The machines that offer slot machine fans the greatest chance of winning are said to be located in pubs, clubs, shops, and chippies.
The reason for this is that slot machines located in these establishments must pay out the advertised amount within a shorter period of time than those in casinos.
Source:www.bized.co.uk