Topics and Phrases is a method that could be used.
To do this you would need to bundle together the common phrases used to complete the authentication and then when you detect the phrase its then associated with an 'Authentication' topic. This would allow this to be measured at a queue/agent level as well so you would get topics views confirming its being done 100% of the time (if required).
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Cameron Smith
VP, Product Management - Workforce Engagement Management
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