Iris Recognition System is considered the most secure biometric identification among all. However, the existing system can be made fool by malignant users with evil intention. This book discusses and explains the possible security threats of the future Iris Recognition System as well as provides some intelligent solutions to prevent such attempts. Prof. Vijay Kumar Sinha researched years on Iris Recognition System for making it robust and spoof-proof from hackers and malignant users. This book will prove a helping hand for students of security, biometric researchers. Readers will find it easy to understand, interesting and self-descriptive. Prof. Sanjay Kumar Singh contributed as supervisor to make this book error free and valuable for researchers. Highlights: -- Luster detection of natural eyes by using shine artifact detection algorithm. --- Differentiation between a natural iris luster and a fake scanned or printed iris luster matrix for detection. ---- Significant enhancementin performance by putting luster detection module in the very first in the iris recognition process. This is an excellent research work on Iris Recognition System and a must-read for young researchers.