# Clerk Expo Starter > If you want to use the new file-system based router that was introduced with [Expo Router V2](https://blog.expo.dev/introducing-expo-router-v2-3850fd5c3ca1), you can check out [this branch](https://github.com/clerkinc/clerk-expo-starter/tree/router-v2) This starter project shows how to use [Clerk](https://www.clerk.dev/?utm_source=github&utm_medium=starter_repos&utm_campaign=expo_starter) with [Expo](https://expo.dev/) to authenticate users in your [React Native](https://reactnative.dev/) application. When users sign up or sign in, Clerk handles the state of the authentication and switches between public or [protected routes](https://reactnavigation.org/docs/auth-flow). [](https://discord.com/invite/b5rXHjAg7A) [](https://docs.clerk.dev) [](https://twitter.com/intent/follow?screen_name=ClerkDev) --- **Clerk is Hiring!** Would you like to work on Open Source software and help maintain this repository? [Apply today!](https://apply.workable.com/clerk-dev/) --- ## Demo ### Sign up using One-time passcodes (OTP) & Sign in using OAuth ## Getting Started ### Prerequisites - React v16+ - Node.js v14+ ### Setup To run the example locally you need to: 1. Sign up at [Clerk.dev](https://www.clerk.dev/?utm_source=github&utm_medium=starter_repos&utm_campaign=expo_starter). 2. Go to your [Clerk dashboard](https://dashboard.clerk.dev/?utm_source=github&utm_medium=starter_repos&utm_campaign=expo_starter) and create an application. 3. Set your publishableKey in `App.tsx` or if you are using a legacy key frontendApi 4. `npm i` to install the required dependencies. 5. `npm run start` to launch the Expo development server. ### Sign up & Sign in configuration For the sign up flow to work as demonstrated, you need to log into your [Clerk Dashboard](https://dashboard.clerk.dev/?utm_source=github&utm_medium=starter_repos&utm_campaign=expo_starter) and make sure the following settings have been configured in **User & Authentication** and **Social login** sections: #### For development instances 1. In Contact information section enable **Email Address** and pick **Email verification code** method in the modal. 2. In Authentication factors section enable **Password** and **Email verification code**. 3. In Personal information, enable **Name** to use first and last names during sign up 4. In Social Login, enable **Google** Oauth provider. #### For production instances 1. Follow all the steps above 2. Whitelist your custom redirect URL via [Clerk Dashboard](https://dashboard.clerk.dev/last-active?path=/user-authentication/social-login) for maximum security during native OAuth flows.  ## Learn more To learn more about Clerk and Expo, take a look at our [official documentation](https://reference.clerk.dev/reference/clerk-expo?utm_source=github&utm_medium=starter_repos&utm_campaign=expo_starter). ## Support You can get in touch with us in any of the following ways: - Join our official community [Discord server](https://discord.com/invite/b5rXHjAg7A) - Open a [GitHub support issue](https://github.com/clerkinc/javascript/issues/new?assignees=&labels=question&template=ask_a_question.md&title=Support%3A+) - Contact options listed on [our Support page](https://clerk.dev/support?utm_source=github&utm_medium=clerk_expo_starter)