>>274612658
>and hand tracking relies on being seen by four cameras at once
Then explain how hand tracking can work while your hands aren't even in your FOV and slightly below. The cameras on Quest don't face forward, they face into the corners, so when your hand is somewhat below the headset, not all cameras are going to have a view of it. 

No, that's not the reason Rift S doesn't have hand tracking. Neither is the idea that the DSP on Quest means we can offload processing from the CPU/GPU. So why aren't they coming out with it on Rift S? Because it just didn't turn out that way. A lot of these projects start out as research. They started on Quest, because they had Santa Cruz to start conducting research on. Rift S didn't come until later and was a product that was more relatively rushed to market. Now that so many more people are buying and using Quests than they are Rift Ss, there is less reason for them to get this feature onto the Rift S, especially when it's still quite limited and mostly just an extra feature in some apps.