Leonardo Ramon Nunes de Sousa. Professor at the Center for Open and Distance Education (CEAD) at the Federal University of Piauí (UFPI). He has a PhD degree in Electrical and Computer Engineering from Mackenzie Presbyterian University (SP), a Master's degree in TeleInformatics Engineering from Federal University of Ceará (UFC), a Specialist degree in New Educational Technologies from Jacarepaguá Integrated College (FIJ - RJ), and a Bachelor degree in Computer Sicence from the Federal University of Piaui (UFPI). He is also a Computer Technician, certified by the Federal Center for Technological Education (CEFET - Piauí). He has experience in Computing, focusing on Informatics in Education and Human Computer Interface (HCI), more specifically in Assistive Technology, Digital Accessibility, Gesture and Touch Interface, Learning Disabilities using Digital Information and Communication Technologies (TDICs), Special Education and Education for People with Disabilities.