Correlation between motion frequency and motion total amplitude index varied from region to region.

运动节律与运动总振幅指数的相关性因部位不同而异。

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High resolution is achieved by measuring motion rather than radio frequency signals as wifi does, and is based on where and how the person moves through an environment over time.

BBC: Technology that works behind closed doors

Unlike traditional keyboards that place your hands in a rigid position, the Engage Keyboard features a patented motion system that studies your typing frequency and makes subtle, comfortable adjustments periodically so your hands and wrists are never in a fixed position while you work.

ENGADGET: Smartfish Engage keyboard automates ergonomics, is finally available