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Economist Simon Johnson says governments will feel the urge to suppress the crypto-currency Bitcoin.
Currencies designed to fix perceived flaws in Bitcoin could lead to competition that makes the idea of digital “cryptocurrency” stick.
Some of Silicon Valley’s best-known venture funds have backed OpenCoin, a startup with a new digital currency called Ripple.
Thousands of startup companies see mobile computing as their chance to strike it big. We picked five.
An open payments system built into Web standards could transform online life, if the proposal takes off.
A startup says technology that lets webcams read credit-card details will make transactions easier and more secure.
Only a few handsets contain contactless payment chips, but many more devices could use sounds to achieve the same purpose.