Looks like it works for thin scattering layers, but you have to customize the light pattern for that specific sample and that specific angle and distance. So it’s not something that will allow a flashlight to shine through a wall.
Yeah, seems it’s purpose-tailored to the material. The title made me think it did not interact with the barrier, which raised a ton of weird questions.
Right... it should also not interact with anything you’d be interested in seeing too...
I assumed that the tailoring itself would reveal properties of the material, hence it’s application to imaging etc.