Learn about free and cheap iPhone credit card readers and explore technologies like tap to pay that enable you to accept payments without a card reader. In my evaluation, here are the best free and ...

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Amazon.com today announced Amazon Local Register, a secure card reader and mobile app that provides local businesses with the tools they need to quickly and easily accept credit and debit cards from a ...

We reported on the dongle-based audio signal credit card reader for iPhone and other connected mobile devices a short while ago, which has been pioneered by Twitter creator Jack Dorsey. Square uses a ...