Concealed moiré pattern encoded security holograms readable by a key hologram
A.K. Aggarwal, Sushil K. Kaura, D.P. Chhachhia, A.K. SharmaVolume:
38
Year:
2006
Language:
english
Pages:
5
DOI:
10.1016/j.optlastec.2004.10.010
File:
PDF, 274 KB
english, 2006