EMBEDDED IDENTIFIERS

摘要

A manufactured item ( 100) includes an outer part (102) including at least one outer material (104); and an identifier ( 106) including at least one three-dimensional configuration (108) corresponding to the identifier (106), the at least one three-dimensional configuration (108) being embedded within the outer part (102). The three-dimensional configuration (108) includes at least one of a substantially empty cavity (1 10) in the at least one outer material (104), and at least one identifying material (1 12) filling at least part of a cavity ( 1 14) in the at least one outer material ( 104).