1. Media Technology and Interaction Design, KTH Royal Institute of Technology, Sweden and i_mBODY Lab, DEI Interactive Systems Group, Department of Computer Science and Engineering, Universidad Carlos III de Madrid, Spain
2. Department of Computer Science and Engineering, Universidad Carlos III de Madrid, Spain
3. Computer Science Department, Centro de Investigación Científica y de Educación Superior de Ensenada, Baja California, Mexico
4. Department of Computer Science and Engineering, Universidad Carlos III de Madrid, Spain and UCL Interaction Centre, University College London, United Kingdom