# Introduction [STAYAWAY COVID](https://stayaway.inesctec.pt/en/) is a voluntary system aiming at supporting the country in the screening of COVID-19. This repository contains the STAYAWAY COVID source code for both Android and iOS. STAYAWAY COVID is a [React Native](https://reactnative.dev) project built on top of the Decentralised Privacy-Preserving Proximity Tracing (DP^3T) project. DP^3T is an open protocol for COVID-19 proximity tracing using Bluetooth Low Energy functionality on mobile devices that ensures personal data and computation stays entirely on an individual's phone. STAYAWAY COVID relies on the open source DP^3T SDKs, which are the implementation of the DP^3T protocol using the [Exposure Notification Framework](https://developer.apple.com/documentation/exposurenotification) of Google and Apple. The SDK source code can be found [here](https://github.com/DP-3T). In the course of a pandemic, timely diagnosis of the population and informed reporting are crucial to break and control the chains of transmission. In the case of COVID-19, this does not come easy given the extended incubation period of the disease and the fact that, in many cases, infected patients are asymptomatic. Thanks to STAYAWAY COVID, we are able to find out if we are at risk of being infected, based on the contacts we have been close to in the previous couple of weeks. A community-wide uptake of this app will turn it into a valuable and decisive ally in the fight against COVID-19. The project was led by [INESC TEC](https://www.inesctec.pt) with the collaboration of [Keyruptive](https://www.keyruptive.com) and [Ubirider](https://www.ubirider.com).