> > > Door > > > > Gambling machines, like pinball machines, have a door. That door has a switch on > it. > > Among other things, the game typically uses it to indicate when to disable > > high-voltage electromechanical parts so that people don't get fried. > > In addition, many have additional locks and doors etc. to stop people accessing the > insides and potentially stealing cash etc. as these things tend to be much more > strictly regulated than other arcade games.
And all protocols used in gambling games need to trigger an event if one door is openned.
-- Risen from my grave --
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