Trusted Group Authentication with SMS and Express

This app allows an admin to invite new users via SMS text message. Users can sign up with a username and temporary PIN.

How it Works

1. Admin invites a phone number by submitting it on the website.

2. The app texts the user asking them to reply with a code phrase.

3. When the user replies correctly, the app texts them a temporary PIN.

4. The user signs up on the website by entering their phone number, PIN, and a username.

5. The app verifies their PIN matches and creates an account, deleting the phone number.

6. The user is now logged in without exposing their personal phone number!

Technologies

• Node.js + Express backend
• SQLite database
• Vonage Messages and Verify APIs
• HTML/CSS/JS frontend

Running Locally

1. Clone this repo
2. Install dependencies with npm install
3. Configure your Vonage APIs and .env
4. Start the server with npm start
5. View in browser at http://localhost:{port}