A Study on Watermarking and Flexpad for Security Applications

Watermarking is defined as a mark that is secretly embedded into data in the form of a signal that has tolerance to noise and is mostly not visible. Watermarking uses copyright protection and authentication. Flexpad is the process of transforming flexible sheets into a deformable display using a projector and a camera. Flexpad provides more security. In watermarking there is always a chance of being attacked and this attack may be passive or active. But in Flexpad there is less chance of being attacked, because, in order to perform an attack, one needs projector and camera. This paper discusses about Flexpad setup, Flexpad applications, Watermarking procedure, and Watermarking applications.