Ultracolor Multiplexing in QR Codes for Data Encryption and Transmission - Ignacio-Cerrato S; Pacios D; Rodríguez JME; Vázquez-Poletti JL; Mariño MEA; Stravakakis K; Di Iorio A; Cesarano C; Schetakis N (Laser Science, Ls 2024 In Proceedings Frontiers In Optics + Laser Science 2024 (Fio, Ls) - Part Of Frontiers In Optics + Laser Science 2024, 2024)