Author(s): Namrata R. Deshmukh, Dr. M. H. Kondekar

Today’s world is a digital world. In every field there is varied use of digital form information. This information handled on Internet and multimedia network system in digital form. The copying of digital content without quality loss is not so difficult. Understanding the need of copyright, protection and authentication, there is great need of prohibiting illegal access mechanism which gave rise to the powerful solution named as “watermarking”. It makes possible to identify owner, author or consumer of a document as well as broadcast monitoring.