
The proposed assistive technology is to project whatever on the screen to a tactile uneven surface, along with touch sensible interactive screen reader. So the blind people can use their hands to have a much better idea of what is on the screen.

(Image reference: Ubi Interactive: https://www.youtube.com/watch?v=Iu2XH5p_hMM&feature=youtu.be)
Furthermore, for real world scene, it can also be converted and projected to the tactile surface. It can be portable, so blind people can put it in the pocket and travel to anywhere, enjoy the beautiful world just as everyone else.