What about perspective and parallax changes? The view in the photo shows an image which matches up pretty well with the surroundings, but it only does so * from that angle and distance*. Think of it like a TV screen. If you walk up to it, or move around in a room, you don’t see into the picture at different angles. You only see what’s projected onto the screen, from the camera’s point of view. Unless the back of the jacket is covered with small cameras pointing in every possible direction, as you moved past the person the image would remain in the same position, and would move out of registration with the background. Plus, as you moved closer or farther from the person the same thing would happen. The imagers would have to be able to compensate for different viewers at different distances from the jacket at different heights.
IMO: Hoax.