Say you get a hankering for a hot dog as you pass by a vendor in the park, but as you pull up to the stand, you realize you gave your last $10 to your teenager to buy gas that morning.
Several years ago, you’d be out of luck or have to get cash from an ATM. Not anymore. Vendors who used to operate on a cash-only basis now have more than a dozen options to accept credit card payments via their smartphones or tablets.
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