The space is filled with resisting and resonating ovoids of light . People move through the ovoids  and enter the space.

When an ovoid  is pushed, the colour of the light it emits changes, and a tone unique to that color echoes out. The light that originated from that ovoid  resonates out to other ovoids  nearby. The tone resonates out continuously in the same way, as the light spreads throughout the ovoids  in the space.

If a wave of light comes from the other side of the space, it signifies that there is another person in that location. As a result, people gain a heightened sense of awareness of the presence of other people in the same space.