Isn't it odd that this is patentable? One day, long before this patent expires, all of the technology needed for this will be commonplace, and the idea will be obvious to any four year old.

I've heard that the point of patents is to incent innovation, but it's hard to see how that's happening here. It's not the case, as with pharmaceutical research, that R&D resources had to be spent to generate the idea, demonstrate its efficacy, and prove its safety. That will be needed for the technology required to implement this, but, this patent actually reduces the incentive to spend R&D resources on the technology necessary to implement it!