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The paper presents a reference framework for applications based on the mixed prototyping practice and mixed reality techniques and technologies. This practice can be effectively used for rapid design assessment of new products. In particular, the paper addresses applications regarding the use of mixed prototyping practice for the design review of information appliances. Various methods and technologies can be used according to the product aspects to validate and test. The paper describes mixed prototyping applications for positioning information appliances within systems and for the evaluation of ergonomics aspects of interactive devices

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The paper presents the results of a research project aimed at developing an innovative system for modeling industrial products based on haptic technology. The system consists of a Computer Aided Design (CAD) system enhanced with intuitive designer-oriented interaction tools and modalities. The system integrates innovative six degrees of freedom (DOF) haptic tools for modeling digital shapes, with sweep operators applied to class-A surfaces and force computation models based on chip formation models. The system aims at exploiting designers’ existing skills in modeling products, improving the products design process by reducing the necessity of building several physical models for evaluating and testing the product designs. The system requirements have been defined observing designers during their daily work and translating the way they model shapes using hands and craft tools into specifications for the modeling system and the haptic tool. The system prototype has been tested by designers who have found it intuitive and effective to use