With the proliferation of electronic payment systems, it might seem like we're on the cusp of a cashless society. But whether you're dealing with a traditional credit card or a mobile payment system, you still need a way to make your plastic work. The good news is that there are plenty of ways to pay with your phone, and no matter which one you choose, you'll need a secure place to put your card data—a card reader. Here are some of our recommendations.
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