Contact tracing is an efficient strategy to prevent spread of a virus. In fact, Apple and Google are in the process of making an application that could potentially alert users when they have been in contact with a COVID-19 positive individual.
To do so, smartphone owners must download the app, which will be available around mid-may, and voluntarily update their medical status. The phone will use Bluetooth to detect nearby devices equipped with the same application up to 30 feet away. When two people are in the same area for more than 5 minutes, their data will anonymously exchange on their phone and be stored for 14 days, the incubation period of the virus. If someone has been exposed to the virus, they will receive an alert with information on how to proceed.
George Petras and Jennifer Borresen. Apple and Google join forces on tech for app that could warn you of coronavirus exposure. USA Today. April 28, 2020.