Radio-equipped Visa card lets you pay your cab fare with a wave

June 13, 2007 For all the convenience of not carrying cash around, credit cards can still be a fairly cumbersome way to pay, particularly for small purcahses. Visa's PayWave system cuts the signature out of the process for transactions under $25; you simply wave your card at a sensor, wait for the green light and go. The system already has about 31,000 implementations in the United States and is now rolling out into New York taxicabs, where it will speed up the payment process.

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