TradeHarbor makes web services that help prevent fraudulent online transactions. Voice Signature Service (VSS) is their primary offering, a voice recognition service that can be used for transactions that require authentication and authorization. VoiceSigExpress is a secure API format of VSS that uses XML or VoiceXML to compare utterances against a Normalized Detector Scale and return a confidence score that may grant authenticated users a variety of permissions, such as login or to verbally sign legally binding agreements.
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