I agree it would be awesome to have it built into cell towers, but wireless in-home charging would be a great start.
Maybe by the time that technology is available it won't really matter anyways because battery tech will have made some advances. The future needs great batteries if we are to be so depended on electricity.
The cell phone tower sounds like a good except for the 15' range thing. I guess it would explain the crowds of people gathered at the base of cell phone towers in the future though.
disclosure: I did know what you were talking about. I just had to say it though.
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For the same reason you don't want to plug a cable to receive data on your phone/tablet or laptop, but you would rather use wireless data. In theory, real wireless charging is brilliant (not the mat thingy) because you get to use your phone while charging it and moving around. And when it takes off, these could be everywhere, just like wifi. Cafe places,gym, supermarkets, train stations, airports, airplanes, everywhere...... to the point you would rarely ever need to do anything about charging and you would forget or never bother to look at the battery indicator. The key to success on this technology is safety and efficiency. If they can overcome these 2, then it would be revolutionary.
You do make good points. I'm not sure you're bundling it with efficiency but if not I think range is the most important. Imagine that you had to have expensive wireless routers in every room in your house. I wouldn't be happy if my router only had a 15' range.