member of Program Committee
INTERACT 2005, September 12-16, 2005, Rome, Italy. reviewer
Designing Interactive Systems 2002, 25-28 June 2002, London, UK.
Mobile HCI 2002, 18-20 September 2002, Pisa, Italy.
Mobile HCI 2003, September 8-11, 2003, Udine, Italy.
Mobile HCI 2004, September 10-16, 2004, Glasgow, Scotland.
Mobile HCI 2006, September 12-15, 2006, Espoo, Finland.
Mobile HCI 2007, September 11-14, 2007, Singapore, Singapore.
Mobile HCI 2005, September 19-22, 2005, Salzburg, Austria.
INTERACT 2007, September 10-14, 2007, Rio De Janeiro, Brasil.
PERSUASIVE 2006: The first international conference on persuasive technology for human well-being, May 18-19, 2006, Eindhoven, The Netherlands.
Advanced Visual Interfaces, May 23-26, 2006, Venezia, Italy.
9th ERCIM Workshop "User Interfaces For All", September 27-28, 2006, Bonn, Germany.
IWSAWC 2007 - The 7th International Workshop on Smart Appliances and Wearable Computing, June 29, 2007, Toronto, Canada.
The 8th international conference on methods and techniques in behavioral research, August 28 - 31, 2012, Utrecht, The Netherlands.
SAINT2012: The international symposium on applications and the internet, July 16 - 20, 2012, Izmir, Turkey.
Coop2014: International Conference on the design of Cooperative Systems, Nice (France), 27-30 May 2014.
SmartObjects 2014: Workshop on Interacting with Smart Objects, Haifa, Israel, Feb. 24, 2014.
(co-)Chair
Mobile HCI 2008, September 2-5, 2008, Amsterdam, The Netherlands. Technical Program Chair
CHI 2008, April 6-10, 2008, Firenze, Italy. CHI Notes co-Chair
AmI'07: European Conference on Ambient Intelligence, November 7-10, 2007, Darmstadt, Germany. Co-Chair "Case Studies and Lessons Learned Contributions" track
AmI'08: European Conference on Ambient Intelligence, November 19-22, 2008, Nurnberg, Germany. Program Co-Chair "Well-being and Care"
AmI'09: European Conference on Ambient Intelligence, November 18-21, 2009, Salzburg, Austria. General Co-Chair
AmI'10: European Conference on Ambient Intelligence, November 10-12, 2010, Malaga, Spain. Program Co-Chair
AmI'12: European Conference on Ambient Intelligence, November 13-15, 2012, Pisa, Italy. General Co-Chair
AmI'14: European Conference on Ambient Intelligence, November 11-13, 2014, Eindhoven, The Netherlands. General Co-Chair
AmI’15: European Conference on Ambient Intelligence, November 11-13, 2015, Athens, Greece. Program Co-Chair
Fun & Games 2008, October 20-21, Eindhoven, The Netherlands, Program co-chair
The 7th international conference on methods and techniques in behavioral research, August 24 - 27, 2010, Eindhoven, The Netherlands. General Chair
IS-EUD: Second International Symposium on End-User Development, March 2 - 4, 2009, Siegen, Germany. General Co-Chair
11th International Conference on Persuasive Technology, April 5 - 7, 2016, Salzburg, Austria, Program co-chair
member of Organising Committee
European Symposium on Ambient Intelligence 2003, 3-4 November 2003, Eindhoven, The Netherlands.
European Symposium on Ambient Intelligence 2004, 8-10 November 2004, Eindhoven, The Netherlands.
IS-EUD: Fourth International Symposium on End-User Development, June 11-13, 2013, Copenhagen, Denmark.
member of Steering Committee
IS-EUD: International Symposium on End-User Development
European Conference on Ambient Intelligence
Mobile HCI