This book constitutes the refereed proceedings of the Third Iberoamerican Conference on Applications and Usability of Interactive TV, jAUTI 2014, and the Third Workshop on Interactive Digital TV, WTVDI 2014, held as part of Webmedia 2014, Joao Pessoa, Brazil, in November 2014. The 10 revised full papers presented were carefully reviewed and selected from 26 submissions. The papers are organized in topical sections on IDTV overview; IDTV development tools; IDTV evaluation and testing; IDTV accessibility and usability.

This book constitutes the refereed proceedings of the 8th Iberoamerican Conference on Applications and Usability of Interactive Television, jAUTI 2019, in Rio de Janeiro, Brazil, in October 2019. The 10 full papers presented were carefully reviewed and selected from 35 submissions. The papers are organized in topical sections on Design and Development; Second Screen and Crossmedia; Interaction Techniques and Technologies; Accessibility; User Experience.