Instead of giving your ATM card and PIN code, the card can double as a credit card with a signature authorization.

不用交出你的ATM卡和PIN密码，只需获得信用卡签名的授权，你就可以使用信用卡。

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But when you replace the PIN code with your signature, the card becomes very limited and can only be used for limited access.

但是当用签名代替PIN密码时，就只能对信用卡进行有限授权的操作。

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That adds yet another layer of security: worrywarts can set the device to require a concerto's worth of fingerprints before it gives out the PIN code.

这自然把安全提高了一个层次：不怕麻烦的人还可以对这个仪器进行设置，只有当指纹全部满足要求时，才能显示客户的身份证号码。

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Researchers at the Black Hat conference showed just what mischief a commonly used UK PoS terminal could get up to when they inserted a chip-and-pin card crafted with malicious code.

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While it's always hard to pin down the exact origins of an idea -- especially one like pulse-code modulation, where a number of parties were involved -- sifting out the large and significant contributions from the gold pan of history tends to bring up the same names time and again.

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Rather than visiting a kiosk to rent a bike, you'll be able to use a smartphone app to locate some available wheels, with position information broadcast by a built-in GPS. Once you find a bike you want to rent, the system will send an unlock code to your handset, which you'll enter into a handlebar-mounted PIN pad.

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