apps (IMAGE) Virginia Tech Caption In deciding whether to use a contact tracing app, families will consider many factors, including the health and vulnerability of other family members, said France Bélanger, who took these screenshots from her iPhone's contact tracing setting. . Credit Virginia Tech Usage Restrictions Credit Virginia Tech's Charlotte Cannon License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.