MasterCard's PayPass -- and are meant to act as companions to existing credit and debit cards. To commemorate the launch, Visa passed out 1,000 Tags pre-loaded with $15 at yesterday's San Francisco Giants game at AT&T Park, encouraging fans to purchase the fatty stadium concessions that could perhaps lull them into the false notion that this is a completely secure payment method.
Visa rolls out payWave-enabled Micro Tag key fobs
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