一分钟音频，有趣又省时：
Used to be if spies wanted to eavesdrop, they planted a bug. These days, it's much easier. Because we all carry potential bugs in our pockets—smartphones. One team of researchers used an iPhone to track typing on a nearby computer keyboard with up to 80 percent accuracy. They presented the findings at a computer security conference in Chicago. [Philip Marquardt et al.,(sp)iPhone: Decoding Vibrations from Nearby Keyboards Using Mobile Phone Accelerometers, 18th ACM Conference on Computer and Communications Security]
曾几何时，特工要想窃听，就得安装窃听器，现在这一切就小菜一碟了，其实我们的口袋里都带着窃听器——智能手机。一个调查团队用iphone识别出了附近的一台电脑键盘上输入内容，准确率高达80%。，他们在芝加哥举行的计算机安全大会上公布了这一发现。
The researchers designed a malicious app for the iPhone 4. When you place the phone near a keyboard, it exploits accelerometer and gyroscope data to sense vibrations as the victim types—detecting whether keystrokes come from the left or right side of the keyboard, and how near or far subsequent keys are from each other. Then, using that seismic fingerprint, the app checks a pre-created "vibrational" dictionary for the most likely words—a technique that works reliably on words of three letters or more.
调查人员研发了一款恶意应用程序，安装在iPhone 4上。把手机放在键盘附近，手机利用加速器和螺旋仪的数据来感知振动频率，检测用户按键是从左边还是右边，以及相邻击键相隔多远，之后，程序根据振动特点查询其先前创建的“振动式”字典，找出最相近的单词，这项技术要求输入的单词最少有3个字母。
Of course, you'd need to install the app to allow it to spy. But whereas most apps have to ask permission to access location data or the camera, that's not so for the accelerometer. This kind of attack may offer good reason to limit accelerometer access too—and keep iPhones from becoming "spiPhones."
当然了，要想让iphone成为特工，你需要安装该程序才行。但是大多数程序要求许可证，才能访问定位数据或摄像机，加速器则不需要。加速器的攻击或许会给限制加速器使用一个正当的理由，由此一来，iphone自然无法成为“特工”。
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