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Force Touch
Force Touch is a technology developed by Apple Inc. First unveiled on September 9, 2014 during the Apple Watch conference, Force Touch is a pressure sensitive multi-touch technology that enables trackpads and touchscreens to distinguish between different levels of force being applied to their surfaces. The technology is designed to add another method of input to Apple's devices. Beginning with the Apple Watch, Force Touch has been introduced to many of the products within Apple's lineup, including the MacBook, MacBook Pro, and Magic Trackpad.
==Hardware==
Force Touch is operated with many components. On Apple Watch, a series of electrodes line the curvature of the screen. When a press is detected, these electrodes determine the pressure applied. A similar process occurs in trackpad applications of the technology (such as in the MacBook Pro and Magic Trackpad), although sensory information is determined by a series of four sensors that align with the corners of the trackpad. The feedback is then relayed to the "Taptic Engine", an electromagnetic linear actuator. Unlike typical motors, the linear actuator does not move in circular formations, but rather in straight horizontal lines back and forth. The Taptic Engine produced immediate feedback without the need to offset the balance of mass. The feedback provided is called "haptic feedback" by Apple, and defined as a very precise vibration that relays information back to the user with precision.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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