Cloud Based Bus Pass System

A cloud-hosted bus pass system. Passengers apply, renew, cancel and update passes online, pay by card and get student discounts, and passes are verified by barcode.

Users register and upload or request data through a web interface. Files are processed (for example encrypted or de-duplicated) before storage in cloud storage. Access control rules decide which users can read or modify each file. The admin monitors storage, users and access logs from a dashboard.

IaaS provides virtual machines and storage (AWS EC2), PaaS provides a platform to deploy code without managing servers (Heroku, App Engine), and SaaS is complete software used over the internet (Gmail).

It follows a three-tier architecture: the browser shows the user interface, the server-side code handles logic and validation, and the MySQL database stores records. Requests travel over HTTP and responses are rendered as HTML or JSON.

All queries use prepared statements with bound parameters, so user input is never joined into the SQL text. Inputs are also validated on the server.

We followed an iterative (incremental) model: requirements and a basic design first, then modules built and tested one by one, with the guide's feedback after each review. It suits a project where requirements become clearer as we build.

Unit testing of each module, integration testing of the complete flow and system testing with real inputs. Test cases with expected and actual results are listed in the report, including invalid inputs.

The current version is tested on a limited dataset or number of users. Future work includes deploying on the cloud, adding more features or languages, improving accuracy with more data and building a mobile version.