Klaus received his master in Physics in 1979 and Ph.D. in 1982 from the University in Göttingen, Germany. Since 1983 he is working in the wireless and communication industry and has been responsible for the design, development and realisation of many technical projects. Since 2002 he is living and working in Singapore. Klaus was an active member in standard committees, he has published many technical papers and is author of two books. In 2013 Klaus passed the exam of the Institute of Internal Auditors (IIA) to become a Certified Internal Auditor (CIA). Klaus is a radio amateur since 1970 and has the call sign 9V1KG (ex DK4TB).