He received his Ph.D. (2009), MSc (2005) and BS (2002) degrees in Information Systems and Computer Science from IST, Technical University of Lisbon. He is also a researcher of the Visualization and Intelligent Multimodal Interfaces Group at INESC-ID Lisboa. He works on multimodal and natural interfaces, virtual and augmented reality and 3D object retrieval. He participated in the SmartSketches, Eurotooling21 and Maximus EC funded projects. His involvement in these projects focused on natural user interfaces and multi-user, large-scale and multi-display environments. At national level, he participated in the DecorAR, MIVis and CEDAR projects and led the 3dORuS project. He was a member of the organizing committee of the INTERACT 2011 conference and is involved in organization of the Eurographics 2016 conference. Alfredo Ferreira is member of ACM, IEEE and Eurographics.