Would like to know what differentiates consumer centered design from other design approaches eg. user centered design. What are the additional key elements that need to be addressed. Would be delighted to hear a comprehensive answer with an approach and methodology.
You could think of Customer Centered Design as an inherited subset of User Centered Design. That means that you do not address only user in an anonymous way, but the user is also a customer. A more targeted user group always have the benefit that you can more fine grained find out the actual target, such as task completion, in this case finding things to buy, and subsequently buy them.
Customer Centered Design is really a Contextual Design of User Centered Design.