Abstract: The present invention is a system and method to detect counterfeiting goods. In this invention, the user initiates the counterfeiting check by using a wireless device equipped with camera in his possession to take a picture of the anti-counterfeiting code pattern of a product item; and send the digital image to a host computer for checking. This invention further includes a second anti-counterfeiting code for user to examine so as to further ensure the authenticity of the product item.

Abstract: A method, an apparatus, and a computer program product for organizing and searching catalogs based on compacting a hierarchical structure (150, 500) into related arrays (210, 310, 410, 610; and 220, 320, 420, 620) are disclosed. This involves the steps of: storing indices (1-9) according to categories and subcategories in an array of indices (310), storing the keys (S54-S48) according to the categories and subcategories in an array (320) of keys, and linking each index of the array (310) of indices with one or more corresponding keys of the array (320) of keys corresponding to the category or subcategory associated with the index. The indices of a category or subcategory are stored contiguously in the array (310). Each index has one or more pointers recording the interrelationship of the indices. The keys of a given index are also stored contiguously with keys of any indices at the same corresponding category or subcategory level.