Shopping Cart access from backend

I would like to know where and how basket information are maintain in WCEM?

• Java vs Backend Shopping cart?
• Consumer logged in or not?

The requirement is to get an access from SAP to customer basket in a B2C scenario. (example: A consumer shows up at a store and want to buy products he put in the web shopping cart the day before (on hold). Store clerck want to see the consumer basket to help him properly). How can we achive this request?

Thanks!