A design approach of Z-agon takes an integrated design.
It takes 5 stages of the design; User-Observation, Scenario Based-Modeling, Interaction Design, Contents Creation and Product Prototyping
The first step is a ethnographic user observation to find user needs and the design bases.

a story board  prototype experimentation

The scenario with persona are descried and analyzed to find out a user interaction.
User interactions are integrated into a design of the interface.
Unique contents are designed from the activity theory analysis.
The prototype is used to examine the concept and the production.
This process integrates R&D stages and marketing stage into a design.

Z-agon Java 3D Z-agon ergonomics research