Handwriting signatures captured electronic signing pads are getting wider popularity. The unauthorized use of a signature, such as copying it into an unauthorized payment, is becoming a big concern. Therefore, this project presents data hiding technique as an alternative to the cryptographic authentication approach. In this project, proposed signature in signature hiding model is presented. Hides secret signature data inside binary cover signature image, depend on bits manipulation. The performance of this proposed model has been successfully tested by computer simulation and the results are presented both quantitavely and qualitatively. Это и многое другое вы найдете в книге Development of signature in signature hiding model (Zahraa Zahraw,Marwah Thamer and Husam Wadhah)