TITLE 2021 16th Iberian Conference on Information Systems and Technologies (CISTI) Proceedings of CISTI’2021 - 16th Iberian Conference on Information Systems and Technologies 23 to 26 of June 2021 Chaves, Portugal EDITORS Álvaro Rocha, Universidade de Lisboa, Portugal Ramiro Gonçalves, Universidade de Trás-os-Montes e Alto Douro, Portugal Francisco Garcia Peñalvo, Universidad de Salamanca, Spain José Martins, AquaValor Research Center, Portugal ISBN: 978-989-54659-1-0 WEB: http://www.cisti.eu/ CopyRight 2021: AISTI - Associação Ibérica de Sistemas e Tecnologias de Informação / Iberian Association for Information Systems and Technologies