Smi Holdings, Inc.

Thomas Stierman

Dan Hunt

Chris Zdon

Paul Meyers

Steven Dwain Zimmermann

Christopher Shannon Gourley

Peter Meyers

A system, method, and apparatus for authenticating microparticle marks or marks including other three-dimensional objects. The authentication utilizes two or more sets of information captured or acquired for the mark in response to illumination of the mark by electromagnetic energy such as in the visible frequency range. These sets of information are then used to verify that the mark includes three-dimensional objects such as microparticles. The two or more sets of information about the mark preferably vary from each other in time, space/directionality, color, frequency or any combinations thereof, and can be captured or acquired as part of one, two, or more images of the microparticle mark.

Three-dimensional authentication of mircoparticle mark

A system, apparatus, and method for identifying and authenticating articles using expression codes obtained from marks incorporating microparticles on or in articles, article packaging, or article labeling where the expression codes are based on signature strings generated relative to attributes of valid individual microparticles. The system, apparatus, and method can also enable the serialization of articles over and above the code-formulation that is achievable with multi-layered color-coded microparticles or single expression microparticles.

Expression codes for microparticle marks based on signature strings

An automatic reader system, apparatus, and method for the identification and authentication of articles enabling automatic collection and processing of code data associated with microparticle marks, automatic determination of the code from the code data associated with microparticle marks, and automatic retrieval of reference information associated with the code.

Automatic microparticle mark reader

Three-dimensional authentication of microparticle mark

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Mahtomedi, MN, United States of America

Thomas Stierman