• N.Srinitya

Secret writing is any writing which is not visible to the naked eye. It can only deciphered under an appropriate light source or equipment’s like UV chamber or VSC (Video Spectral Comparator) or by heating or by suitable treatment with a chemical. (Deepti Andharmule, Neeti Kapoor, Ashish Badiye (2013). Secret writings are used mostly by Prisoners, Criminals, Terrorists, International spies, Intelligence agents and Drug dealers. (Deepti Andharmule, Neeti Kapoor, Ashish Badiye (2013). Invisible inks are also known as Sympathetic inks which are colourless in nature and cannot be visible until it is treated with heat, vapour or chemical. Secret writing has been a subject of interest in forensic science, as they play a crucial role in criminal investigations. (Deepti Andharmule, Neeti Kapoor, Ashish Badiye (2013). When a message is intentionally concealed through encryption or other covert means, forensic experts may be called upon to decipher the hidden content and uncover valuable evidence. In this paper we will explore the modern applications of invisible ink, uncovering the impact on historical events and its relevance in today’s digital age. This article will examine the fascinating techniques used to create and reveal hidden messages, shedding light on its intriguing role in communication espionage. (Deepti Andharmule, Neeti Kapoor, Ashish Badiye (2013). The study’s major goal is to discover secret writings using various solutions and to know which solution is visible under instrument.

Secret writing, Invisible inks, Sympathetic inks, Forensic science, Criminal investigations, Encryption, Covert communication.

"Deciphering secret writing : Utilizing UV and heat treatment techniques", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.11, Issue 6, page no.b539-b562, June-2024, Available :http://www.jetir.org/papers/JETIR2406164.pdf

"Deciphering secret writing : Utilizing UV and heat treatment techniques", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.11, Issue 6, page no. ppb539-b562, June-2024, Available at : http://www.jetir.org/papers/JETIR2406164.pdf