The following blog post contains the design principle that reflects essential design aspects of our application.
Like in the previous blog post mentioned: The user must always feel comfortable while interaction with the system. This effects indirect computer aided and direct art creation. For direct creation it means, that the user is willing to draw in public places in front of other peoples. And for indirect creation it is important not to affront the user with inappropriate computer aided art. Furthermore it is importent to priovide the user a complete and constant help functionality to offer him a comfortable feeling while using the application.