What are my options for mobile pay?

With Wal-Mart Stores Inc. becoming the latest retailer to launch a mobile pay system, there are more places than ever to break out a digital wallet to pay for the things you want.

Square files for keenly awaited stock market debut

Digital payments startup Square, founded by Twitter chief Jack Dorsey, announced Wednesday that it has filed with US regulators for a stock market offering to raise $275 million.

Bitcoin 'mining pool' promises to stay small

The largest group of bitcoin miners, which maintains and processes transactions in the digital currency, is promising to avoid majority control of the currency as a temporary measure to maintain the payment system's credibility.

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