Cellular phones track and reveal owners’ movements, generating useful data for pandemic tracking. (Shutterstock) January 27, 2022 Ottawa’s use of our location data raises big surveillance and privacy concerns Geoffrey M Rockwell, University of Alberta; Bettina Berendt, Technische Universität Berlin; Florence M. Chee, Loyola University Chicago; Jeanna Matthews, Clarkson University, and Sébastien Gambs, Université du Québec à Montréal (UQAM) In order to track the pandemic, the Public Health Agency of Canada has been using location data without explicit and informed consent. Transparency is key to building and maintaining trust.