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Changes to Step #20

Edit by Ron Davis

Edit approved by Ron Davis

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[* black] Only four strain gauges? Seems unlikely... Time to hunt around.
-[* black] Ahah! Some strange rubbery glue was holding a cable over the other half of each strain gauge pair.
+[* black] Ahah! Some strange rubbery glue was holding a cable over the second half of each strain gauge pair.
[* black] As we witnessed in our [guide|38300|previous experience|stepid=86958|new_window=true] with Apple's Force Touch, the strain gauges in this trackpad measure pressure from your fingers without any significant movement.
[* icon_note] With the virtual click of the Taptic Engine, the new trackpad has essentially no moving parts, which usually promotes longevity.