Unclonable human-invisible machine vision markers leveraging the omnidirectional chiral Bragg diffraction of cholesteric spherical reflectors by Hakam Agha, Yong Geng, Xu Ma, Deniz Işınsu Avşar, Rijeesh Kizhakidathazhath, Yan-Song Zhang, Ali Tourani, Hriday Bavle, Jose-Luis Sanchez-Lopez, Holger Voos, Mathew Schwartz, Jan P. F. Lagerwall

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