Main challenge for this group is to understand why many applications of THz waves have been postulated or even demonstrated, but none has really developed into a mass-market product and what are the main obstacles. It has to find the answer if, and for which systems, it is possible to overcome these obstacles (like high costs and/or low compactness) and which system shows a high enough market potential. The general task of this group will be to transform innovations from other WGs, from strategic partners and any other useful innovations in the field into demonstrators of highest possible Technology Readiness Level (TRL). The group will consider not only technical challenges but also will be taking into account the economic, market and industry point of view as well as a societal end-user needs. This group will be multidisciplinary, primarily consisting of R&D scientists and engineers of various specialties with provision for tailoring competences according to the needs of current projects by short-term employment of specialists and/or subcontracting certain tasks. The group will initially focus on four areas of applications: i) safety and security (landing assistance vision, crowd monitoring, and postal scanners1), ii) non-destructive quality control (packaging inspection, aeronautic and automobile industry fiber-injected parts inspection), iii) environment (plant and food inspection scanners) and iv) medicine and/ health (a THz microscope for skin cancer and chirurgical diagnosis assistance).