VIRGINIA, USA — QR codes, holograms, the color green, were among the new features on the Virginia safety inspection sticker that state police were touting on Wednesday as they unveiled their graphic ...
Schematic of secure holography using a reconfigurable stacked metasurface based on a modular diffractive deep neural network. Each metasurface layer independently reconstructs distinct ...
In today’s fast-paced commercial environment, businesses keep looking for new ways to make product security better, improve ...
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