An interesting piece on mobile payments - how have you taken advantage of similar systems in the last 6 months?

For Mobile Payments, It's Hip to Be Square

After a recent ski trip in California with friends, I needed to reimburse one of them for the rental gear she'd picked up on my behalf. Except I didn't have my checkbook handy, and she didn't have an account with PayPal. So the following steps occurred: I flew across the country to obtain and fill out a check.

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