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Some of the components of our UI are not fully implemented, and will have to wait for later design iterations. These components include include storage of previous notes, and user information handling. All of the system state as far as current notes consists of "canned" state for now, because we don't have multiple users or effective preservation of the state they put on the laundry machines. Another shallow component is the inter-user messaging (we don't actually send any messages, just display entered text for now).
In general the shallow areas can be divided into several categories: first, inter-user interactions are shallow in our prototype. We currently only use canned interactions.