*Ph.D. Scholar, Department of Forensic Science, Sam Higginbottom University of Agriculture, Technology & Sciences, Allahabad, Uttar Pradesh 211007, India. **Assistant Professor, Department of Forensic Science, Sam Higginbottom University of Agriculture, Technology & Sciences, Allahabad, Uttar Pradesh 211007, India. ***Associate Professor, Forensic Science Unit, Shri Guru Tegh Bahadur Khalsa College, University of Delhi, New Delhi, Delhi 110007, India.
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From the earlier times of espionage, invisible ink is considered to be an assured and significant device of cryptography. Even though the use of invisible ink has now been almost entirely taken over by technical cryptography or steganography, its history still remains exceptionally fascinating, and today researchers are trying to find out readily available compositions which can inscribe secretly and their respective decoders. The art of secret writing was probably proposed to create any written text indecipherable to a reader who could read the same only after applying certain decoding process to make the writing legible. Though, the methods of secret writing are abundant but this paper principally emphases on the application of commonly available items which could act as a secret ink and similarly other commonly available items which could be applied as their respective decoders.
Corresponding Author : Harne Prajakta, Ph.D. ScholarDepartment of Forensic Science, Sam Higginbottom University of Agriculture, Technology & Sciences, Allahabad, Uttar Pradesh 211007, India.
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