Testing usability with 3D paper prototypes--Case Halton system.

In our study, we set out to see how low-fidelity three-dimensional paper prototypes could be used to test the usability of two alternative concepts for a drink can refund machine. The tests were carried out in the real environment with the actual users of the product. The tests took place before any software or hardware had been implemented. Using paper prototypes is a quantitative evaluation method which is easy to apply and suitable for product development processes with a tight schedule. We found the 3DPP modeling and testing method turned out to be useful and the results obtained had an influence on the product.