The iPhone is well known for its excellent camera. You may have noticed a black dot near the lenses and wonder what it is there for and what it does.

Autonomy is all about redundant sensing—cameras to see things, radar that knows how far away those things are, and lidar that both sees and measures distances to fact-check the other sensors. Lidar is ...

Apple isn't known for making big changes in its devices too often, but the company does stack some industry-leading bits of hardware in its products. Ever noticed the black circle next to the cameras ...