Abstract: A System and method for fast and nuance evaluation of the nature and/or intensity of the Sentiment of a Respondent in regard of a predefined Sentiment Indicator, with this person reacting to that Indicator by sliding one or several fingers on a touch sensitive surface, which sliding is analyzed according to predefined Patterns with matching sliding being translated into a Value representative of that sliding, Value that is available for instant or deferred processing, sharing or rendering on a screen.