An Android app that allows Columbia students to locate their friends on campus in real-time.
- User logs into app via facebook
- User enters his columbia email and then verifies his/her email address
- The user is shown a map of columbia with their friends' faces and last-known locations
- (optional) Show which building (Mudd, Low, etc) that location has come from
- Choose which friends to share location with
- Send push notifications when a friend enters / leaves campus
- Poke the friend (vibrates the phone)
- Geofencing in app to detect location and bounding box for Columbia Campus area (also google api)
- Dynamo DB for storing and retrieving locations of users
- A graph DB (neo4j) for storing user-friend graph and user-specific permissions by friend
- App polls the service with locations of itself and queries for friends' locations
- 3 primary data-stores
- Friend graph
- User locations
- User status (one of
on_campus,off_campus,entered_campus)
- (optional) Use some ML / stats for outlier detection while showing last known location of user.