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How Touchscreens Recognize Your Fingers
触摸屏如何识别你的手指
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Touchscreens feel your finger but not a pencil or glove.触摸屏能感应手指，但无法感应铅笔或手套。
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Most use capacitive technology that senses tiny electric changes.大多数触摸屏采用电容技术，可感知微小的电荷变化。
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Your skin holds a small electric charge naturally.人体皮肤天然带有微弱电荷。
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When you touch the screen, it detects where the charge shifts.手指触碰屏幕时，系统会检测电荷偏移的位置。
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A grid of wires under the glass maps the exact spot.玻璃下方的导线网格可精确定位触点。
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That signal tells the device what button or icon you tapped.该信号告诉设备你点击了哪个按钮或图标。
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Water or thick gloves block the charge, so they won’t work.水或厚手套会阻断电荷，因此无法使用。
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This makes phones and tablets easy and responsive to use.这使得手机和平板操作简便、响应迅速。