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How Touchscreens Distinguish Between Finger Tap, Swipe, and Pinch Gestures

触摸屏如何区分点击、滑动与双指缩放手势

How Touchscreens Distinguish Between Finger Tap, Swipe, and Pinch Gestures

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  1. Capacitive touchscreens detect finger contact by measuring tiny changes in electrical field distribution.

  2. A single tap registers as a brief, localized capacitance spike at one coordinate point.

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