TrueDepth paves the way for Animoji. These are animated faces of a dog, cat, unicorn, rabbit and other animals, not to mention an alien, a robot and, er, A smiling pile of poo. As you raise an eyebrow, frown or gurn, the creature onscreen matches your face in perfect time. Animoji are possible because of years of expensive research and development, a powerful processor and precision-crafted components. All this just to make a poo smile.