The vending machine uses QR codes, PayPal, a smartphone camera and Twitter. And, to complete the geek-buzzword bingo checklist, the hardware is based in part on Arduino, an open source [...]
Source: http://www.wired.com/gadgetlab/2010/10/no-change-for-the-vending-machine-buy-candy-with-paypal/
MICROSOFT MILLICOM INTL CELLULAR MOBILE TELESYSTEMS NANYA TECHNOLOGY NII HOLDINGS
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