Bo.by is an interactive system that enables bonding between premature babies in incubators with parents, in situations where normally it would be impossible. A device for parents, and a mattress for an infant, are connected and collect, send and receive data such as touch, breast movement, vibration, heartbeat or body heat, enable to feel the touch of one another. This two-way communication, enriched with senses, offers the possibility to experience a natural, prolonged skin-to-skin bonding.