How can we make a system that makes an invisible interaction visible? What happens on microscopic scale when we shake each others hands? Our goal with this project was to help people with a weak immunsystem by connecting them to healing healthy microbes from people with a strong immunsystem. How more diverse the microbes are in our bodies, how less we get sick, so sharing microbes is actually also a healthy thing to do. The installation is made out of tubes where water flows through and there is a check in point for the hands.