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公开(公告)号:US20220129654A1
公开(公告)日:2022-04-28
申请号:US17505081
申请日:2021-10-19
Applicant: University of Rochester
Inventor: Gaurav SHARMA
Abstract: A dual-modulated QR code (DMQR code) is in the format of a conventional QR code but uses elongated markers instead of black squares in the code modules. The positions of the markers within the DMQR code represent a nonconfidential primary message, and the orientations of the markers within the modules of the DMQR code represent a confidential secondary message.