Abstract: A remote station for tracking promotion of at least one group of products each of which bears a code that uniquely identifies each product in the group, wherein the remote station may be communicatively coupled to at least one user station is disclosed. The station includes a database resident at the remote station, wherein the database stores ones of the uniquely identifying codes that have been previously received from one or more user stations, and a database server, coupled to the database, that compares each new candidate code received from a given user station against the previously received codes stored in the database. The database server credits an account of a user associated with the given user station with a non-zero promotional credit only if such new candidate code received from the given user station was not previously stored in the database.

Abstract: A remote station for tracking promotion of at least one group of products each of which bears a code that uniquely identifies each product in the group, wherein the remote station may be communicatively coupled to at least one user station is disclosed. The station includes a database resident at the remote station, wherein the database stores ones of the uniquely identifying codes that have been previously received from one or more user stations, and a database server, coupled to the database, that compares each new candidate code received from a given user station against the previously received codes stored in the database. The database server credits an account of a user associated with the given user station with a non-zero promotional credit only if such new candidate code received from the given user station was not previously stored in the database.