Presentation of "Group Tracking", an Android application develop for the Pervasive Systems course of the Master Engineering in Computer Science of University of Rome "La Sapienza". The target of the app is to track the position of friends obtained by Facebook inside a certain range. This position is obtained by Beacons inside buildings and by GPS outside.

1. SmartTeamTracking
Biagio Botticelli Stefano Conoci
Davide Meacci Salvatore
Rivieccio 1

2. Remember the problem ...
● Tracking the exact position of friends in venues, museums or
offices is not a trivial task...
● It could not be possible to make a phone call to each friend...
● How can I get the position of my friends inside the building?
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3. ... and the solution!
Track the position of Groups of Friends !
How ???
Using smartphones with Beacons for indoor
positioning and GPS for outdoor !
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4. What we have done:
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Design the Architecture;
Develop Main Components (Client, Server);
Set up a Custom Server;

5. Design the Architecture
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6. Design the Architecture: Server
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● Id as key (reference to Neo4j);
● Store facebook informations;
● Each User has GPS coordinates;
● Each Group has a radius;
Simple UML Diagram

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● Main flow of the Application
● Definition of the REST API:
1. Main Operations;
2. I/O Parameters;
3. Paths;
Design the Architecture: Server

8. Design the Architecture: Client
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A simple and clean UI inspired from
Telegram/Whatsapp application
Low coupling in order to works in parallel
Strong cohesion, each class is responsible
for its own information

9. Developing Main Components:
Server
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10. Developing Main Components: Overview
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Hardware
Mobile
Web Application
Server

11. Developing Main Components: Server
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● Package Structure
○ Main Package (main.java)
○ Model
○ REST API
○ Repositories (Spring Beans)
○ Utils (Facebook interactions)
● Maven to manage Dependencies

12. Developing Main Components: Server
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● Embedded Neo4j DB;
● Easily integrated with Spring;
● Complex queries;
● ID of Nodes as Key in the model;

13. Developing Main Components: Server
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14. Developing Main Components: Server
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15. Developing Main Components: Server
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16. Developing Main Components:
Client
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17. Developing Main Components: Client
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Realm DB
Parceler

18. Android Application Flow
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19. Developing Main Components: Facebook SDK
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● Available for Android App development;
● Used for Login session together with
Server-side REST service;
● Member of Groups could be taken only
from Facebook friends list;

20. Social Aspect: Group of Friends
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● Groups of people created between
friends linked by Facebook;
● User can know the position only of
those friends that are:
○ registered in the same group;
○ inside the range of the group;
Privacy is guaranteed!

21. Set Up Custom Server
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22. Set up Custom Server
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● Friend’s Domain: amaca.ga
● Linux black 4.5.4-1-ARCH (Debian)
● 3,75 GB RAM
● 100 GB Hard Disk

23. Set up Custom Server
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● Setup by SSH (port 8082)
● Runs our service on port 8080
● Get code from git (git clone),
then compile it (mvn install) and run it
(systemclt restart
smartteamtracking.service)
● Examine log
journalctl -u smartteamtracking.service

24. Things to do
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25. Things to do
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● Avoid sending unused data by REST calls;
● Website for adding beacons to the system;
● Improve and Debug Android Application;
● Privacy checks based on Location.

26. Things to do: Web Application
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● Drupal as Content
Management System;
● Free and Open Source;
● Modular Architecture;
● Target: management
of Beacons by RESTful
web service;

27. About us
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28. Contacts
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● Biagio Botticelli: LinkedIn Profile, botticelli.1212666@studenti.uniroma1.it
● Stefano Conoci: LinkedIn Profile, stefano.conoci@gmail.com
● Davide Meacci: LinkedIn Profile, davide.meacci@gmail.com
● Salvatore Rivieccio: LinkedIn Profile, rivieccio.1405255@studenti.uniroma1.it
SmartTeamTracking

29. Questions ?
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30. Set Up Custom Server
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Thank You!