Voiceprints Made Secure By Your Smartphone - Carnegie Mellon University Research

Voice recognition procedure has now expanded in many sectors, such as banking and telecom for providing extra security. The process involves recording a phrase spoken by the person during registration to be used as a reference for later. The trouble with this procedure is that the voiceprint is stored in a server of the institution which might be hacked by miscreants and once they gain access to your voiceprint they might use it to break into other systems that use voice recognition. Considering this scenario, researchers led by Bhiksha Raj at Carnegie Mellon University have developed a procedure by which they make sure that your voice is safe with your smartphone.

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This method of voice verification transforms speech into a series of password-like data strings in a computing process that can be handled by the average smartphone which makes sure that your voiceprint is always safe with you. The slight differences that people make while speaking are handled by the technology as it makes not one but multiple password-like data strings by using different mathematical functions. The technology also utilizes your smartphone to enhance security by making sure that the data strings specific to you can be generated by your smartphone only. Encryption of these data strings is also done.

This system has a 95% accuracy which is not as good as commercial systems but the researchers have assured that work is still in the research phase and improvements are being done before rolling the technology to the general public. They are expected to present this technology as a keynote speech at an information security conference in Passau, Germany next month.

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