· Keynote Address, HISA 2013, Port Elizabeth, July 2013
o The eHealth Revolution in South Africa
· Keynote address, eStrategies Workshop, April 2013
· Keynote Address, National Health Council of South Africa, Pretoria, August 2012
o The need for data interoperability standards towards NHI
· Keynote Address, 2011 Women In Engineering, Johannesburg, November 2011
· Public lecture, Finnish Industry and Academia, Helsinki, Finland, October 2010
· Keynote Speaker, ICCIR International Conference 2010, Kampala, Uganda
· Keynote speaker, Annual Industry BPM conference, Reserve Bank, South Africa, 2010
· Keynote Speaker, ICCIR Mobile Seminar 2009, Kampala, Uganda
· Keynote Speaker, First National Bank, South Africa, 2009
· Keynote Speaker, World Usability Day Event, November 2008, Johannesburg
· Keynote Speaker, Intranet Design Conference, November 2007, Johannesburg
· Keynote Speaker, ESKOM Management Forum, May 2007, Johannesburg
· Keynote Speaker, WUD Seminar, November 2006, Johannesburg
· Radio Interview SAFM, WUD Seminar, November 2006, Johannesburg
· Radio Interview RSG, WUD Seminar, November 2006, Johannesburg
· Keynote Speaker, UFS Research Symposium, September 2006, Bloemfontein
· Conference Chair, CHI-SA 2006, January 2006, Cape Town
· Programme Chair, CHI-SA 2006, January 2006, Cape Town
· Proceedings Editor, CHI-SA 2006, January 2006, Cape Town
· Conference Chair, CHI-SA 2005, May 2005, Johannesburg.
· HCI in South Africa, UPE Senate Hall, Port Elizabeth, Joint Workshop of IFIP TC.13 and CHI-SA,
· 3 March 2004
· Usability Engineering, IBM Head Office, Johannesburg, Usability Seminar presented by CHISA and CSSA, 27 February 2002
· Usability testing: Find the problems before your customers do!, Boardwalk Conference Centre, Seminar on E-Business in IT in Eastern Cape, CSSA EC Chapter, 10 May 2001
· An Introduction to Formal Usability Testing, University of Port Elizabeth, Usability Engineering Seminar, 4 April 2001