encoded microparticlesUS8498052Sep 14, 2009Jul 30, 2013Illumina, Inc.Composition including an item and an encoded optical substrate and a method for identifying an itemUS8565475Sep 23, 2011Oct 22, 2013Illumina, Inc.Optical system and method for reading encoded microbeadsUS8614852Sep 7, 2010Dec 24, 2013Illumina, Inc.Elongated microparticles having an optically detectable code configured to at least