Authentication for voice, specifically Amazon’s Alexa, has its limitations. The initial Account Linking process Amazon provides for identification works for many scenarios, but it is only done once (signing into the skill via the Alexa mobile app or website), and all subsequent sessions with the skill are linked - no log-in screen presented again. I’ve often been asked what the options are for verifying every time a user engages with an Alexa skill. For example;...

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