Digital Watermarking and Other Data Hiding Techniques

Digital watermarking is not a new name in the tech-nology world but there are different techniques in data hiding which are similar to watermarking. In this paper we compare digital watermarking with other techniques of data hiding. Ste-ganography, Fingerprinting, cryptography and Digital signature techniques are compared with watermarking. We need water-marking for digital data security .It provides ownership assertion, authentication and integrity verification, usage control and con-tent labelling.