This session helps you get to grips with two difficult VUI design issues. Firstly, how do you measure success when different audiences may have different interpretations of what success means? Learn alternative ways to measure success and how to determine which to use for your application. Secondly, proper names are frequently difficult for speech recognition systems to correctly recognise, especially when the name is unusual or is mispronounced by the caller. Discover strategies and tactics from an expert who has deployed dozens of IVR systems in Europe.