Removing the trackpad from the bracket requires slicing through four pads of glue.

With the pad splayed open, we get our first look at the pressure sensors.

And popping the sensor bracket under a microscope, we get a second, closer look.

Based on the wiggly pattern of traces stuck to the metal tabs, we're pretty sure the magic pressure sensors in the new Force Touch trackpad are tiny strain gauges. Mounted on flexing metal supports, they detect the amount of flex on each—and based on that, the force from above.

This works in conjunction with the traditional capacitive touchpad up top, to pinpoint where you're applying force.

Be sure to check out our in-depth video analysis of the Force Touch trackpad!