This is great! Just checked out the site. I like how they found a work around for charging multiple divices, the frequency splitting problem, using just software. (research article:Splitting Frequency Diversity in Wireless Power Transmission)
MIT was able to achieve 2 meters (6.5 ft) though.(research article: Wireless Power Transfer via Strongly Coupled Magnetic Resonances)
15 feet... is kind of a stretch because of the inverse square law of EM waves. They may just need to find an innovate way to compensate.
The articles are just for further reading if you are interested
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Thanks for the articles. Will check them out for sure.
I hope they find a way to do longer distances though. Life will be much simpler without long cables lying around everywhere.
Indeed