Is there any plan to allow built-in hand and finger detection within ARKit to let the user interact with an object directly with his hands and not only though touch events on the device screen?
ARKit has no built-in hand or finger detection, but you can use Vision to track hands or detect hand poses. Here is a developer sample illustrating this:
Detecting Hand Poses with Vision
For ARKit feature requests, we encourage you to send us a report in Feedback Assistant