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A group of researchers in Korea have created an inexpensive
way to transmit data from objects to mobile phones when swiped. Small
"rectannas", a cross between an antenna and a power source, are
printed onto plastic foils using electronic inks that cost only a penny to
produce.
It uses the radio waves emitted from a smartphone to transmit data to it from
a tiny chip.
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As NFC is the main technology behind it - and it is already
used in devices that enable contactless payments - this could easily become a
replacement for QR codes.
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