A gaming environment comprising a gaming table and a number of optical scanners capable of scanning and decoding machine-readable symbols carried by wagers that are placed approximately within a wagering on the gaming table. The optical scanners operate over specific ranges to capture the reflective...http://www.google.co.uk/patents/US20060019739?utm_source=gb-gplus-sharePatent US20060019739 - Systems and methods for scanning gaming chips placed on a gaming table
