Céline Coutrix is a CNRS researcher in the HCI Engineering research group at Laboratoire d'Informatique de Grenoble in France. Her current research in HCI is in the design and software development of interactive systems merging physical and digital worlds. She is the author of the Mixed Interaction Model and she has developed several physical-digital systems, some of them in collaboration with artists and designers. Concurrently, she is an external researcher in the research and creation program at EnsadLab.