[alectronic]

I dont think it is a secret, I think it is because they do not really see any particular reason why someone would want to do this. It is expensive and complicated. I am not saying you should not, I think it would be a great challenge, but they have a lot of money in the field, both physical and paychecks for those that write the code. And beyond that, much of the hardware components are donated, so they may not even have the data.