iFixit has taken apart the new released Apple multi-touch pad known as the Magic Trackpad.
“The Magic Trackpad has a unique way of triggering the mouse button. As you press down on the top surface of the Trackpad, the two rubber feet near its front edge push up on the hinged plate and set screw (shown in orange) attached to the chassis. This squeezes the electronic mouse button switch (shown in red), producing the characteristic “click”.”
More pictures after the jump.