Combo-Verification of static characteristics and dynamic (biometric) signals of a handwritten signature.Signature Images are not enough\n\nIf a signature has to be non-repudiated, the processes of capturing, storing and verifying have to fulfil certain technical and legal requirements. Furthermore, the engine(s) used for signature verification must achieve an acceptable Equal Error Rate (EER).\n\nA lotof signatures today are taken with a low resolution. One example is the capturing devices that courier services are using. They capture a rather pixilated image of a signature that is usually not applicable for a later verification. Signatures taken on these devices may easily be claimed to be a forgery. Non-repudiation can only be achieved when the biometric characteristics of a signature are captured too, and when this information is securely bound to the signed document. The additional verification of dynamic signals offers a higher level in security. A signature with a similar image like the reference signature may be detected as falsification because differences in their creation characteristics are discovered. \n\nNowadays a lot of companies are capturing a signature image and embed it into documents somehow. They do not realize that this image will not allow any further verificationprocess if its authenticity is in doubt. Furthermore this process is not compliant with various e-sign laws throughout the world.\n\nFor additional information check www.signplus.com Biometrics, Handwritten, Processing, Signal, Signature, Unterschrift, Verification