I'm a skeptic myself here, but you do point out something interesting. Could such a technology be commercially viable if we make assumptions of where device eff

I'm a skeptic myself here, but you do point out something interesting. Could such a technology be commercially viable if we make assumptions of where device efficiency is going? All comments I've seen talk about charging today's iPhone. What about iPhones in 5 years time? Is it reasonable to assume that their power consumption will drop enough to make this make more sense? Anyone with lots of knowledge about power efficiency of mobile devices want to chime in?