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Concept
Force Touch
Summary
Force Touch is a haptic technology developed by Apple Inc. that enables trackpads and touchscreens to distinguish between various levels of force being applied to their surfaces. It uses pressure sensors to add another method of input to Apple's devices. The technology was first unveiled on September 9, 2014, during the introduction of Apple Watch. Starting with the Apple Watch, Force Touch has been incorporated into many products within Apple's lineup. This notably includes MacBooks and the Magic Trackpad 2. The technology is known as 3D Touch on the iPhone models. The technology brings usability enhancements to the software by offering a third dimension to accept input. Accessing shortcuts, previewing details, drawing art and system wide features enable users to additionally interact with the displayed content by applying force on the input surface.
3D Touch has three levels of input based on the pressure sensitivity. This enables users to customize a preference of light, medium, or firm press on the iPhone's screen. Force Touch on the other hand, has two layers of interaction. Apple's haptic engine called the Taptic Engine resides in these devices, which houses a linear actuator producing vibratory effects as feedback. Apple allows application developers to leverage the pressure sensitivity of trackpads and touchscreens into their own apps. 3D Touch was discontinued with the iPhone 11 and onwards in favor of Haptic Touch.
Haptic Touch is a feature on the iPhone XR (but not the iPhone XS) and later iPhone models replacing 3D Touch. The touchscreen, which no longer has a pressure sensitive layer, distinguishes between a tap and a long-press using a timed delay to activate certain 3D Touch features (only ones for elements that do not have an action assigned to long press). This feature was added to the iPhone SE (1st generation) with the iOS 13 update and to any iPad capable of running iPadOS 13. As of watchOS 7, only Haptic Touch is recognized, and Force Touch is discontinued on all subsequent Apple Watches.
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