✦ LIBER ✦

Interferometric key readable security holograms with secrete-codes

✍ Scribed by Raj Kumar; D Mohan; A K Aggarwal

No coin nor oath required. For personal study only.

📜 SIMILAR VOLUMES

Concealed moiré pattern encoded security

✍ A.K. Aggarwal; Sushil K. Kaura; D.P. Chhachhia; A.K. Sharma 📂 Article 📅 2006 🏛 Elsevier Science 🌐 English ⚖ 274 KB

Interferometric moiré pattern encoded se

✍ Raj Kumar; A.K. Aggarwal 📂 Article 📅 2007 🏛 Elsevier Science 🌐 English ⚖ 524 KB