An iPhone app can enable the smartphone to tell what somebody is typing on a nearby computer keyboard. Christopher Intagliata reports. 

  一个iPhone程序可以让你的手机分辨出周围的人在电脑键盘上输入的内容。Christopher Intagliata报道。
   
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.
  
以往假如间谍们要监听信息输入，需要先植入病毒。但现在，事情要容易多了，因为如今潜在的病毒就在口袋里装着呢——那便是智能手机。3
     
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]  
  
一个研究团队成功使用一个iPhone程序，识别出了附近的一台电脑键盘上输入的内容，准确率高达80%。在芝加哥举行的一个计算机安全会议上，他们公布了这些发现。[Philip Marquardt et al,(sp)iPhone: Decoding Vibrations From Nearby Keyboards Using Mobile Phone Accelerometers, 18th ACM Conference on Computer and Communications Security]
    
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. 
   
这些研究人员为iPhone 4设计了一款邪恶的应用程序。当你将手机放在键盘附近时，受害者打字所产生的震动，会被它通过加速度感应器和陀螺仪感知。它侦测那些键盘敲击是来自于键盘的左边还是右边，相邻的敲击之间隔了多远。接着，程序将这些“震动指纹”与一个事先创建好的“震动字典”相比对，从而找出最为相近的词。这项技术要求输入的词最少有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." —Christopher Intagliata
  
当然，你得事先安装这个应用程序好让它才能够开展间谍活动。但是，绝大部分的程序都需要经过允许才可以使用地点数据和照相机，使用加速度感应器却没这个要求。于是，存在这种攻击的可能性，为限制加速度感应器的使用提供了一个很好的理由。——Christopher Intagliata