Interesting. Just yesterday I was reading up on new wireless charging technologies called "Resonant Wireless Charging" that will allow what amounts to near-field wireless charging by using coils tuned to specific frequencies and the charging takes place only with the like-tuned coils coupling. This means even if you place another wireless charging coil in close proximity to the one that is frequency tuned, unless they're frequency matched there will be no coupling and so no transfer of power.
This is very interesting technology and could ultimately result in not just entire table surfaces but entire rooms, or living spaces being "wireless transmitters", where you wouldn't even have to place the phone in close proximity (like for instance within .5cm, versus where QI is now with near zero distance requirement), but could simply be within the environment or perhaps feet away from a tuned coil. In other words, in thoery the phone would not run on the battery even while using it in the air, but would be being replenished while at the same time powered by the wireless charging technology.
Orientation of the phone would also be less an issue, meaning instead that the phone's receiver coil and that of the transmitter would not have to be in alignment, but could be even at 90 degree opposition. Truth is this may be incorrect and instead they may be using multi-directional coil arrays to accomplish this orientation flexibility. Imagine sitting in a chair at the airport and using your phone or tablet in your lap and while you do it's actually charging simply because you are essentially "in" the transmitter, since the walls, floor, ceiling tiles, even the chair you're sitting in could all be transmitters.
Even more interesting although somewhat disappointing (since it opens the doors to being charged for that power), is that it would then allow the power providers (aka the airport, cable company, whomever), to actually allocate and monitor consumption of the power by specific devices based on their unique frequency signature, meaning just like we pay now for airtime and data on our phones, we would eventually pay for power in the same monthly allocation.
Power for your phone might ultimately be bundled into the cellular data costs by the carriers as they partner with power providers or simply set up their own systems. It's not too dissimilar to how if you are a Comcast Cable and Internet subscriber, and you go into certain establishments or in areas where they have WIFI access you are then able to connect to those networks automatically and not only receive and transmit through the internet but also view and control your home DVR and watch cable channels on your phone or tablet.
Now of course, this means there would be even more Magnetic and Radio Frequency polluting of the environment, and there is the possibility that it would never get that far as people would be claiming (and maybe rightly so), that all this RFI/MFI would (could), be contributing to damage to our DNA and triggering cancer among other potential illnesses or diseases, creating headaches, causing nausea, disrupting the actual communication of the brain/body, etc.
It is interesting none the less and I do believe that we may be heading to an era where batteries are no longer an issue, and my be no longer present in our devices at all - replaced instead by very small supercapacitors that are designed not to provide day-long power (or two day-long power as in the Turbo), but instead only perhaps minutes or maybe hours...just enough to bridge the gap between the last charging, or "power hotspot" area and the next.
Wireless Charging How Wireless Chargers Work PowerbyProxi