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View Code? Open in Web Editor NEWThis project aims to inform people of potential contact with others who have Covid-19. The app distinguishes between a 'node', which is a device that broadcasts a unique ID. The node can be set up in a static location, or move around with a carrier. Users of the app only scan for unique IDs sent by nodes and check whether they have come across potential people with Covid through secure back-end communication of Node IDs and contact timestamps.