An Android location tracker forked from jcs/triptracker and modified to use Firebase as a backend. This fork also uses Google Play Services' fused location API to track the location using GPS, wifi and cell networks.
The formidable original work: Copyright (c) 2012 joshua stein [email protected]
The App sends location updates at a specified time interval to a given Firebase URL. Basic Email/Password authentication is used to allow for multiple users.
This is still work-in-progress.