VocalPay - Voice-Activated Payments Made Simple

VocalPay is a multilingual, voice-controlled payment application built with React Native and FastAPI. It enables seamless, secure transactions using voice commands and supports 19 Indian regional languages.

Features

• Hands-free Transactions – Perform payments, check balances, and view transaction history with voice commands.
• Secure & Reliable – Two-factor authentication ensures safe transactions.
• Inclusive Design – Voice instructions assist illiterate and visually impaired users.
• Multi-Language Support – Works with 19 Indian regional languages (fully tested in 5).
• Custom Translator API – Built using gTTS, ASR, GoogleTrans, and PyDub.

How It Works

1. Choose Your Language – The app instantly adapts all text to your selected language.
2. Speak Your Command – Press the mic button and say, for example:
   • "Pay 500 rupees to <person's name>"
   • "Check balance"
   • "Show transaction history"
3. Confirm Payments – A confirmation screen appears before processing payments. Verify details and authenticate using fingerprint.
4. Voice Guidance – Tap the info button to receive instructions in your chosen language.
5. Accessibility Features –
   • Voice instructions for every screen.
   • Mic control via volume buttons for easy navigation.

Tech Stack

• Frontend – React Native (Expo)
• Backend – FastAPI

Installation

1. Clone the repository:

   git clone <repo-url>

2. Navigate to the client directory and install dependencies:

   cd client && npm install

3. Set up the backend and create a virtual enviroment:

   cd ../server
   python -m venv .vocalpay

4. Activate the virtual environment:
   • On Windows

     .\.vocalpay\Scripts\activate

   • On macOS/Linux

     source .vocalpay/bin/activate

5. Install backend dependencies:

     pip install -r requirements.txt

6. Run the application:
   • Start the frontend by going into client directory and running:

     npm start

   • Start the backend by going into client directory and running:

     fastapi dev main.py

7. Install the Expo Go app on your phone and scan the QR code to launch VocalPay.