Latency would be huge with that setup. 900mhz radio has more than enough range and bandwidth to handle 50,000 - 60,000 devices updating several times a second.

Latency would be huge with that setup. 900mhz radio has more than enough range and bandwidth to handle 50,000 - 60,000 devices updating several times a second. I've used LSR [0] modules in the past for prototyping and they have a gateway that would allow you to control the entire thing through ethernet so any computer could run the program and just spit out ethernet packets to send control information. [0] http://www.lsr.com/ http://www.lsr.com/