Missing face-to-face interaction? Try becoming a ‘hologram professor’Beaming a hologram of lecturers into classrooms offers greater closeness than video systems, say Carla Victoria RamÃrez López, Leticia Castaño Sánchez and Patricia Aldape ValdésCarla Victoria RamÃrez López , Leticia Castaño Sánchez , Patricia Aldape Valdés Tecnológico de Monterrey