In our daily life, Internet-of-Things (IoT) is everywhere and used in many more beneficial functionalities. It is used in our homes,\nhospitals, fire prevention, and reporting and controlling the environmental changes. Data security is the crucial requirement for\nIoT since the number of recent technologies in different domains is increasing day by day. Various attempts have been made to\ncater the userâ??s demands for more security and privacy. However, a huge risk of security and privacy issues can arise among all\nthose benefits. Digital document security and copyright protection are also important issues in IoT because they are distributed,\nreproduced, and disclosed with extensive use of communication technologies. The content of books, research papers, newspapers,\nlegal documents, and web pages are based on plain text, and the ownership verification and authentication of such documents are\nessential. In the current domain of the Internet of Things, limited techniques are available for ownership verification and copyright\nprotection. In the said perspective, this study includes the discussion about the approaches of text watermarking, IoT security\nchallenges, IoT device limitations, and future research directions in the area of text watermarking.
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