The most frequently asked questions, answered

You have questions, we have answers.

Voice Biometric FAQs about ViGo, Fusion, voice biometrics in general…


ViGo Voice Registration and Authentication

      • Is voice registration via digits or phrases or something else?
        • You have a choice between either digits or phrases. With digits we use 4 (something like “zero six nine three”) and phrases are typically at least seven words long (e.g. “Ice and steam are different forms of water”).
      • What is the voice registration / verification user experience like?
        • ViGo configurations are standardized at four utterances for registration and a minimum of one for verification. For phrases it’s three and one. In this context, ‘minimum’ means that if we think it’s you, you’re in – and of we’re not sure, we’ll ask you for another one.
      • What phrases come with ViGo out-of-the-box?
        • You get the following:
          – VoiceVault knows me by the sound of my voice
          – At VoiceVault, my voice is my password
          – Ice and steam are different forms of water
          – There are 24 hours in a day
          – People carry umbrellas when it is raining
          – The Olympic Games are held every four years
          – Musicians often play instruments in a group
          – 音乐家们经常成群结队地演奏乐器。
          – VoiceVault 通过我的声音识别我。
          – Con frecuencia los músicos tocan instrumentos en grupo
          – VoiceVault me reconoce por el sonido de mi voz
      • Can my users make up their own phrases?
        • No, your app has to prompt them for what they have to say.
      • OK, so can my organization define its own phrases?
        • Yes, of course. You can add as many phrases as you like and in any language. All the details are on the ViGo pricing page.
      • Is ViGo single or multifactor authentication?
        • Being mobile-based. Vigo is multifactor. The device itself is a factor and the voice biometrics is a second. ViGo mandates that a third factor also be used so that if the voice biometric verification fails for any reason, your users can still carry on to achieve their goal within your app.
      • Why is a third factor mandatory?
        • Aside from being good practice to provide a fallback if the voice verification fails for whatever reason, it is a key part of the voice print enhancement mechanism within ViGo.
      • What accuracy am I going to get from ViGo?
        • ViGo is configured to deliver a 0.01% false accept rate at a false reject operating point of ~5%. This is for all supported modes and for any phrase of 7+ words.
      • Which mobile platforms are supported by ViGo?
        • ViGo currently supports iOS7 (or later) and Android (Honeycomb or later).
      • Can our users share their ViGo account to logon across multiple devices?
        • Yes, this is possible. As the ViGo systems deliberately does not store personal identifiable information, you would need to build functionality in to your app that would manage the synchronization of a user’s ID between devices. As long as this single user ID is used for all interactions with ViGo then everything would work correctly regardless of which device the user accesses, and specific ViGo features such as adaptation ensures that security and user experience will also be identical.

ViGo Voice Biometric FAQs

        • What audio formats does ViGo support?
          • If you use the ViGo sample code or library, you don’t need to worry about this. If you’re using the ViGo REST API then have a read of this post.
        • Why does ViGo show that I have used more of my user allowance than expected?
          • A ViGo user is created in your app every time you call the registerClaimaint method. If a user doesn’t complete the registration process and your workflow doesn’t correctly implement the abortDialogue and deleteClaimant methods, then this user ID could effectively become ‘tombstoned’. It is therefore important that you follow the instructions in the ViGo developer guide and clean up correctly when a user does not complete or aborts a registration.


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