GeoWallProject in Mobile and Pervasive Systems

Prof. Alessio Vecchio Sara EgidiAlessio Villardita

Università di Pisa - Computer Engineering A.A. 2015/2016

Overview

GeoWall is an application that allows

users to leave messages to virtual

walls placed

around

the world

Functional Requirements

• Walls can be placed anywhere

• To read a wall, the user must be within its range

• Unreachable walls cannot be opened

• Users must be registered to use the service

• Users either may leave text or photo messages

Technical Requirements

• Use of fine location through GPS, WiFi and mobile networks

• Real-time notifications for messages, walls and geofencing

• Google Maps API

• Internet connection always enabled

• Camera to take photos

System Architecture

LocationServices GoogleMapsAPI

Mobile device interacts with:

● Firebase:

Real-time JSON database

Asynchronous communications

Storage

● GoogleMapsAPI

● Location services

Application Architecture

Screenshots

Future developments

Features:

• Polymorphic fab

Create a new wall if there is no wall near or automatically write to the joined wall (select if more than one)

• Expiring walls

• Friends list

User lists for:

• Recently visited walls

• Favorite walls

• Walls where has left messages

Notifications:

• On new message in a favourite walls

• On new message in a written wall