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A new multimodal biometric database designed and acquired within the framework of the European BioSecure Network of Excellence is presented. It is comprised of more than 600 individuals acquired simultaneously in three scenarios: 1) over the Internet, 2) in an office environment with desktop PC, and 3) in indoor/outdoor environments with mobile portable(More)
We report on our first developments towards building a novel user authentication system using combined handwriting and speech modalities. In our project, these modalities are simultaneously recorded by asking the user to utter what he is writing. We first report on a database that we have recorded according to this scenario. Then, we report on the results(More)
We present a procedure to create brute-force signature forgeries. The procedure is supported by Sign4J, a dynamic signature imitation training software that was specifically built to help people learn to imitate the dynamics of signatures. The main novelty of the procedure lies in a feedback mechanism that is provided to let the user know how good the(More)
We report on our developments towards building a novel user au-thentication system using combined acquisition of online handwritten signature and speech modalities. In our approach, signatures are recorded by asking the user to say what she/he is writing, leading to the so-called spoken signatures. We have built a verification system composed of two(More)
We are proposing a novel and efficient user authenti-cation system using combined acquisition of online handwriting and speech signals. In our approach, signals are recorded by asking the user to say what she or he is simultaneously writing. This methodology has the clear advantage of acquiring two sources of biometric information at no extra cost in terms(More)
We propose a new user authentication system based on spoken signatures, where online signature and speech signals are acquired simultaneously. The main benefit of this multimodal approach is better accuracy at no extra cost for the user in terms of access time or inconvenience. Another benefit lies in a better ro-bustness against intentional forgeries due(More)