Build a Browser-Based Walkie Talkie with React, Twilio Programmable Voice, and Twilio Functions. This tutorial will teach you how to implement in-browser calling in a form reminiscent of a walkie talkie. It requires setting up a Twilio account, creating a new Twilio Function Service, and deploying the backend. The frontend is built using React.js, and it includes a virtual Twilio Device that connects to the TwiML application. The app allows users to enter their name, connect with another user, and make voice calls in real-time. After completing this tutorial, you can extend this app or turn it into a browser extension to chat with friends all day long.