A device for use with reading wagers that includes but is not limited to an illuminator having at least one emitter of monochromatic light orientable to illuminate a defined wager location; an imager system orientable to receive light from an illuminated object, if any, at the defined wager location;...http://www.google.de/patents/US20040005920?utm_source=gb-gplus-sharePatent US20040005920 - Method, apparatus, and article for reading identifying information from, for example, stacks of chips
