Household digital description definition (h3d) architecture and method

A recordable type medium storing a computer program product for conducting a transaction between a merchant and a user, the computer program product comprising:

• instructions for accessing, using a composite key generated by a user, a user profile associated with the user and generated by the user, wherein accessing is performed by a merchant, wherein the user profile comprises data specifying a set of household items owned by the user, wherein the user profile is one of a set of user profiles that make up a H3D definition, wherein the H3D definition comprises data describing a plurality of household items belonging to the user, and wherein the plurality of household items includes the set of household items;
• instructions for responsive to accessing the user profile, generating a merchant profile, wherein the merchant profile comprises data specifying a portion of inventory associated with the merchant, wherein the portion of inventory is selected based on the user profile;
• and
• instructions for transmitting an offer to sell the portion of inventory.

A recordable type medium storing a household digital description definition, wherein the household digital description definition comprises:

• first data representing a household definition object, wherein the household definition object comprises corresponding sets of information corresponding to ones of household items associated with a user;
• second data representing a set of profiles, wherein the corresponding sets of information are grouped into ones of the set of profiles, wherein ones of profiles comprise differing levels of information regarding corresponding household items in the corresponding sets of profiles, and wherein ones of profiles comprise differing levels of security;
• and
• third data representing an overall security setting, wherein the overall security setting determines access to the household definition object.