Location based services can notify you about points of interest in your proximity. Tracking the spatio-temporal evolution of such data, we can provide an insight on the path the virus is following during its spread.
What it does
When you open the app other users are pinged about your presence, so that you are aware of the "network of contacts" you are creating. A user that tests positive, can anonymously send out a warning to their network, accompanied by level of severity depending on the duration of interaction, proximity and other factors.
How I built it
The app uses neo4j along with Bluetooth and GPS technologies.