This article describes the process of modifying the Linux kernel to add an oft-demanded feature: feedback on physical input.

本文描述了修改Linux内核以添加经常需要的功能的过程：对物理输入做出反馈。

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With these simple algorithms for user space and kernel-level code, you now have the ability to detect, log, and respond to the full range of physical input from the user.

通过使用针对用户空间和内核级代码的这些简单算法，现在能够检测、记录和响应来自用户的各种物理输入。

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Much like authentication with physical tokens, biometric authentication has the limitation that you need to have access to a physical input device in order to be able to authenticate.

与使用物理标记的认证很相似，生物认证也存在限制，您需要访问物理输入设备以便能够进行认证。

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In the case of EPOS, we're shown a stylus that, in addition to offering traditional physical touch input, also allows users to interact with a device via ultrasound.

ENGADGET: Hands-on with wireless, ultrasonic stylus and touchless gestures at MWC (video)

Well this is interesting: a webOS dev spotted a pair unnamed devices in his log files -- one sporting a 1024 x 768 screen and a non-sliding keyboard, and the other a smartphone with no physical QWERTY input.

ENGADGET: Evidence of webOS netbook and keyboard-less phone pop up in developer logs

Groopman observed that hope does not just involve a mind-to-body connection, but also a body-to-mind connection, where neural input about one's physical condition serves as a moderator of positive and negative emotions.

CNN: How hope can help you heal