Let's take a gander under the hood of the Taptic Engine, shall we?

The rubber we hoped to simply cut open needed to be cut away chunk by chunk.

Finally, the coils are free! Well, bare at least.

Force Touch looks to be a clever application of a technology that dates back a ways—the year 1824, to be exact.

Made of wire coils surrounding a ferromagnetic core, the electromagnet in the Force Touch Trackpad is used to create the vibrational feedback you feel.