Physical Based Lighting/shadow Augmented Reality

I’ve been trying to detect the real time light source in the physical environment and use it on the augmented objects using Vuforia and Unity but I could not achieve that. if there are already existing projects or someone is working on the same method. please help!

examples:

Tutorial Unity 2017.3 and Vuforia 7.0 on Augmented and Virtual reality ( Mixed Reality ) With shadows and how can be Change opacity ( Intensity ) Shadows

Tutorial Videos