Microstructure overlapping image application with optical decryption

Currently, valuable tickets are scanned and verified by embedding quick response (QR) codes, but few studies have embedded encrypted ...

Source: Journal of the Optical Society of America A - July 29, 2020 Category: Physics Authors: Chi-Hung Wang Yuh-Shyan Hwang Hsi-Chun Wang Yu-Ling Wang Kuo-Yu Tsai Source Type: research