A gaming system for implementing coinless gaming environment having a central processing system interconnected to a plurality of gaming machines and a plurality of change machines. The central processing system includes a processor and a memory having a plurality of memory locations for storing data....http://www.google.fr/patents/US6746330?utm_source=gb-gplus-shareBrevet US6746330 - Method and device for implementing a coinless gaming environment
Method and device for implementing a coinless gaming environment
