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Re: Starbucks Adopts... PMA for wireless charging?!?
For reference: Starbucks starts rolling out wireless phone chargers nationwide | The Verge
A little bit of history: Here’s why Qualcomm just joined the PMA: Hope for a single wireless charging standard — Tech News and Analysis
There were three: Power Matters Aliance (PMA), Wireless Power Consortium (WPC), and Alliance For Wireless Power (A4WP). A4WP is Qualcomm's solution and late last year, they joined both PMA and WPC. Qi is WPC.
Earlier this year, PMA and A4WP essentially merged.
Two alliances team up to win the wireless charging war | The Verge
Starbucks adopting PMA isn't anything new. Finally rolling it out is.
What both parties get, though, is a leg up on Qi. Originally, the Wireless Power Consortium's Qi standard was the front-runner in wireless charging — attracting device manufacturers like HTC, LG, and Samsung to build phones and tablets with the tech — but over the past couple years the PMA and A4WP have attracted a host of supporters, including Intel, AT&T, Starbucks, McDonalds (via PowerKiss), and The Coffee Bean and Tea Leaf.
Qualcomm and Samsung have been playing the field, presumably hedging their bets, but both are founding members of the A4WP. WiTricity, the MIT spinoff that invented resonant wireless charging, is now an A4WP member as well.