The cellphone has been more than a cellphone for years, but soon it could take on an entirely new role — standing in for all of the credit and debit cards crammed into wallets.
Instead of swiping a plastic card at the checkout counter, consumers would merely wave their phones.
There’s just one hitch: While the technology is already being installed in millions of phones — and is used overseas — wide adoption of the so-called mobile wallets is being slowed by a
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