Scientists and researchers have been interested in making visibility of the invisible for a long time. This is achieved partly better, sometimes worse. For example it is possible to in the medical it is possible to perceive information invisible the human eye in the medical sector through X-ray, MRT, Ultrasound or CT. This technique has also been adopted for other areas such as the security checks in airports. 
Hidden information get visible if they are interpreted by experts even if images are not explicit. For laymen these images remain vague and incomprehensible. This phenomenon is in the focus of X-ray+. Moving schemes move on a screen and need an individual interpretation of the observer. Strips in radiograph aesthetics move to sound and light changes. This way it appears to the viewer as if he saw concrete elements but important areas are still hidden for the audience.