01218nas a2200217   4500000000100000000000100001008004100002260001200043653002100055653002000076653001500096653001200111100002100123700002000144245007900164856009700243300001000340490000600350520063000356022001400986       2013                            d  c03/201310aError Correction10aConfidenciality10aMultilayer10a2D Code1 aNobuyuki Teraura1 aKouichi Sakurai00aConfidentiality of 2D Code using Infrared with Cell-level Error Correction  uhttp://www.ijimai.org/journal/sites/default/files/files/2013/03/ijimai20132_13_pdf_21937.pdf  a23-310 v23 aOptical information media printed on paper use printing materials to absorb visible light. There is a 2D code, which may be encrypted but also can possibly be copied. Hence, we envisage an information medium that cannot possibly be copied and thereby offers high security. At the surface, the normal 2D code is printed. The inner layers consist of 2D codes printed using a variety of materials, which absorb certain distinct wavelengths, to form a multilayered 2D code. Information can be distributed among the 2D codes forming the inner layers of the multiplex. Additionally, error correction at cell level can be introduced  a1989-1660