The clerk swipes the food over the scanner. The price pops up on the screen. How did the computer get so smart?

商店的记账员把食物擦过扫描器。食品的价格就在屏幕上弹出了。计算器怎么会计算得如此精准？

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Anurag Gupta, a telecoms entrepreneur, has reduced a bank branch to a smart-phone and a fingerprint scanner that allow ATM machines to be taken to rural customers.

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They make it possible for smart phone users (who have a scanner and the right software) to go swiftly and effortlessly to a corporate, product or brand website.

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