Hello Dear.
The solution can be designed using simple hardware and a software application running at the backend, you will not need to rewire the casino except just need to install some machines. I will be able to start working on this with my team asap but first need to have some technical discussions about the design and limitations. Will you be available ?
I have worked in designing embedded systems for Germany which includes indoor farm lighting and water, atmosphere management system, out door automatic irrigation system, Colar for monitoring cattle herd so that they can be monitored about health and feeding conditions.
Camera applications for clients in Germany and Europe as well.
I have also designed Driver fatigue detection system using raspberry pi and online traffic monitoring system with tagging C# software to count Number of vehicles.
I have designed Neuro-marketing system, Induction motor fault detection system, Security system, Smart home IOT and many small projects using arduino as well.
I have developed systems using arduino, STM32, PIC and raspberry pi.
Your problem falls under my expertise.
Looking forward to hear from you soon.
Regards