MacBook trackpad not dragging? Try adjusting its sensitivity

Several years ago, Apple finished deploying a “solid-state” trackpad in place of the mechanical kind it had used starting in 1995. This new kind of trackpad first appeared as part of the short-lived 2015 12-inch MacBook. Instead of having internal switches and other moving parts, this Force Touch keyboard simulates a response using haptics. When you press the trackpad, a motor inside vibrates in a rapid way that makes you feel as if the trackpad moved. You can try

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