Feeder is a technology created to analyse audiences through facial recognition. The objective of Feeder's technology is to improve the ROI of marketing campaigns, tracking users' micro-expressions in front of specific content, in order to create a frame-by-frame analysis of the users' emotions in real time. A real-time analysis of users' reactions and how they feel in front of the content. Thanks to Feeder's algorithm, emotions are translated into understandable, measurable and quantifiable concepts (such as attention, validation or rejection) in order to help marketing and content teams to optimise their content and campaigns, improving their return on investment.