Group-6

E – Wallet Project

1.1. Purpose

The purpose of this document is to present a detailed description of the e-Wallet System and describe the files and code that has been developed for the same. This document is intended for both the stakeholders and the developers of the system.

1.2. Scope of Project

This system will be an e-Wallet designed for use by the students of BITS Pilani, Goa Campus. The main objective is to provide the students/vendors at Bits Goa with a simple software that will enable easy, secure payment at all of the outlets available on campus and therefore facilitate a new technology-driven means by virtue of which, every student can do away with the burden of having to worry about carrying cash around campus for various needs.

Currently, some of the issues brought out by the students include the fact that they do not receive change in cash, on making purchases at most outlets on campus. Added to this is the problem of most students having to wait for a long time to get the bill settled after a small purchase. Even worse are scenarios where the outlet owners are robbed of their money when the students manage to get away without payment when there is a huge rush. The e-Wallet system has the potential to solve all of these issues if implemented across campus.

Currently, the system is designed for usage only by students of Bits Goa. Further additions could be made to the system to make this facility available to any on-campus resident, say, staff members, wardens, hostel assistants, etc.

1.3. Glossary

e-Wallet

The software component that handles the payment and associated data and provides the user( in our case, a student) with options to make payments, recharge and avail loyalty benefits provided by the vendors.

Student

Refers to the students at Bits Goa. More specifically, any person with access to the outlets at Bits Goa who has an SWD account maintained at the campus and is identified by a unique ID number provided by the campus.

* Database

Collection of all the information, i.e., payment logs, credit balances and dues, account balances and registered student information is monitored by this system.

* Vendor

Person/outlet on campus who(which) receives the payment from the students when a purchase is made by them.

* Payment tracker

A system which facilitates the secure payment process by interacting with the student and the database and the vendor.

* Loyalty benefit

Special offers made by outlets on campus to students who make purchases from their outlets using the e-Wallet system.

* Logs

Refers to data that indicates the proceedings of various transactions between the student and the vendor. In a way, they behave as a sort of proof of payment.

* Account

Refers to the unique account maintained for each registered student which comprises a security pin, balance amounts, unique name and id.

* Recharge

Recharge here, is used to refer to the transfer/translation of money from the student’s swd-account to e-Wallet cash, which the student can use at the various on-campus outlets.

* User

The term user has been used along with the term Student in this document. In all cases both terms refer to a student as described above.

1.4. Use case Diagram, Project Requirements and CRC Cards :
The Use case diagram, Project Requirements document and CRC cards can be on the master branch of OOP-BPGC-201415/Group-6 repository. The relevant file names are:
UseCase_1_0.zargo

Proj_Req_3_0.pdf

Proj_Req_3_0.docx

CRC_Cards_3_0.vpp These files are also shared on the ‘Project’ Group.

1.5. UML Diagrams and JUnit tests:

The relevant files containing UML Diagrams relevant to our project are as follows:

Class Diagram: Uml_1_0.zargo
State Diagrams:
Database: Database Stae Diagram.zargo ;
Payment Tracker: PaymentTracker State Diagram;
Controller: controller.zargo
Collaboration Diagram: collab.zargo
Sequence Diagram: sequenceDiag.vpp

The Junit test classes can be found in the following folder: testcodes