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crwdns2933797:0Andrew Optimus Goldheartcrwdnd2933797:0crwdne2933797:0

crwdns2936043:0crwdne2936043:0 crwdns2933505:0crwdne2933505:0 Andrew Optimus Goldheart

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[* black] Let's continue unraveling the secrets of the trackpad, starting with the coils.
[* black] Underneath all that wire is a whole lotta nada. Well, there is a ferromagnetic core, but no surprises lurk beneath that glittering surface.
[* black] Old school retina trackpad and new comparison. The plate is mostly the same, the cables and such are different.
- [* red] Touch sensor 1.0
- [* orange] Touch sensor 2.0
-[* black] Strain gauges probably!
+ [* red] Click sensor 1.0 (a button)
+ [* orange] Click sensor 2.0 (magic?)
+[* black] We're pretty sure the magic pressure sensors involved in the new Force Touch trackpad are tiny [http://en.wikipedia.org/wiki/Strain_gauge|strain gauges|new_window=true], mounted on flexing metal supports to detect the amount of force behind a click or press.
+[* black] This works in conjunction with the traditional capacitative touchpad up top, to pinpoint where you're applying force.