Tap thePoint and Speakicon (a finger pointing at a three-lined menu).
Hold your iPhone or iPad about 12 inches away, parallel to the from the text you want read.
Point your finger at the thing you want read and wait for your finger to be detected.

Your iPhone or iPad places a yellow box around the thing you pointed to.
It then reads the text.
you’re free to repeat this for as many items as you want.
This feature can be useful for reading signs or buttons and interacting with the world.
First, it must be runningiOS 17oriPadOS 17.
Maybe the most famous use of LiDAR today is in the sensor and vision systems of self-driving cars.
The LiDAR requirement is the key: there are many more iOS/iPadOS 17 compatible devices than those with LiDAR.
In this case, that means that you’ll need at least an iPhone XS.