In this stage i work with the wall, cherching the way in wich the two sides could communicate through the wall.
The information that i used to communicate to the other side are the body's higth and its distance from the wall.
I realised that these two informations (the body's higths anf its distance from the wall) can be used as a plane.
It means that the higth and the position of the body in a side could influance the space directly in the oder side, making interact two people
I will apply a plane as communication element of distance from the wall