1. Unique Identification Authority of India, AADHAAR: http://uidai.gov.in, accessed on August 11, 2015.
2. Canadian Border Services Agency, CANPASS — Air: http://www.cbsa-asfc.gc.ca/prog/canpass/canpassair-eng.html, accessed on August 11, 2015.
3. Machine Readable Travel Documents, Doc 9303, Sixth Edition,2006
4. Iris recognition system, United States Patent, US 4641349;Flom,1987
5. Biometric personal identification system based on iris analysis, United States Patent, US 5291560;Daugman,1994