See also: halftone QR codes https://cgv.cs.nthu.edu.tw/Projects/Recreational_Graphics/Halftone_QRCodes/ https://cgv.cs.nthu.edu.tw/Projects/Recreational_Graphi

See also: halftone QR codes https://cgv.cs.nthu.edu.tw/Projects/Recreational_Graphics/Halftone_QRCodes/ https://cgv.cs.nthu.edu.tw/Projects/Recreational_Graphics/Ha...