科学美国人60秒 生物特征识别您的心跳

（单词翻译）

Smartphones can already verify your identity by scanning your fingerprint¹ or your face. But there’s something inside you that’s also unique proof that you’re you.

智能手机可以通过扫描指纹或脸来验证身份，但是在内心深处，你自己的特质，来证明你就是你。

Researchers have developed a device that uses low-powered Doppler radar² to decode³ the unique geometry of a user's heart…and how it squeezes and swells⁴ as it beats. That biometric information can authenticate⁵ the identity of the person under scrutiny⁶.

研究人员开发了一种设备，利用低功率的多普勒雷达来解码用户心脏的独特几何形状，以及当心脏跳动时，是如何挤压和膨胀的。这种生物特征信号可以确认审查人的身份。

And if the wrong person sits down: "It would recognize that there is a heart, but the geometry of my heart is different from yours so it would still log me out." Wenyao Xu is a computer scientist at the University at Buffalo⁷ who helped develop the tech.

如果错误的人入座后，“设备可以识别到有一个心脏，但是所检测的心脏的形状和你的不同，所以，我还是无法登陆系统。”布法罗一所大学的计算机科学家徐文耀，帮助研发了此设备。

He says this unusual biometric is robust⁸, because it's actually two different biometrics. The first is the shape of your heart—a 'biologic' biometric or static trait, like fingerprints⁹ or iris¹⁰ patterns. The second is the beating of your heart: what's called a 'behavioral' biometric—which analyzes¹¹ a dynamic process, and can be harder to spoof¹².

这种不同寻常的生物特征是很强大的，因为实际上，这是两种不同的生物特征信息。第一个是心脏的形状——例如指纹或者虹膜类型等生物特征或者静态信息。第二个是你心脏跳动的节奏：也称为行为识别特征——主要分析动态过程，并且很难作假。

So far they've tested the system on about 100 people—with an accuracy of over 98 percent. They'll present the results this month at the MobiCom conference in Utah.

目前为止，他们已经利用该系统测试了约100人——准确度超过98%。并将在犹他州的 MobiCom会议上展示此成果。

Xu says the radiation from the device isn't harmful—just a fraction of that we get from our smartphones. But at a couple inches in size, the unit’s not quite ready to fit inside a smartphone. "Uh, not yet. So we're waiting for the call from Apple." Because ya gotta have heart. But you also gotta have funding.

徐表示，这个设备的辐射是无害的——其发出的辐射量只是我们智能手机的一部分。但是尽管其尺寸不大，但尚不能安装到智能手机中。“还没应用到手机呢，我们在等着苹果公司的电话。”人的确有心脏，但是也得有资金啊~