DEV Community: Phone Email

Firebase Phone Authentication vs Phone Email’s ‘Login with Phone’ Button: A Comprehensive Comparison

Phone Email — Fri, 22 Mar 2024 08:07:29 +0000

In today’s digital age, user authentication plays a crucial role in ensuring the security of online platforms. As businesses strive to enhance user experience and streamline authentication processes, solutions like Firebase Phone Authentication and Phone Email’s ‘Login with Phone’ button have gained prominence. This blog aims to provide a comprehensive comparison between these two offerings, helping you make an informed decision for your authentication needs.

Phone Email’s ‘Login with Phone’ Button Overview
Phone Email’s ‘Login with Phone’ button is an innovative solution designed to simplify phone number verification. It functions similarly to Firebase Phone Authentication, allowing users to verify their phone numbers seamlessly. With a simple click of the button embedded on client websites or mobile apps, users are prompted to enter their country code and mobile number. Subsequently, an OTP (One-Time Password) is sent to their mobile device for verification. Once verified, users gain access to the respective platform, making the authentication process smooth and secure.

Phone Email’s ‘Login with Phone’ Button Core Features

Seamless Integration: The ‘Login with Phone’ button seamlessly integrates into any website or mobile app, offering a hassle-free authentication experience for users.

Cost-Effectiveness: Phone Email’s solution provides phone number verification at minimal or no cost, making it accessible for businesses of all sizes.
Enhanced Security: Utilizing OTP verification ensures that only legitimate users with access to the registered phone number can authenticate, bolstering platform security.
Phone Email’s ‘Login with Phone’ Button Advantages
User-Friendly Interface: The intuitive design of the ‘Login with Phone’ button enhances user experience, reducing friction during the authentication process.
Customizable Configuration: Businesses can customize the button’s appearance and authentication flow to align with their branding and user preferences.
Scalability: Phone Email’s solution is scalable, catering to the authentication needs of growing businesses without compromising performance.

Firebase Overview
Firebase, a popular mobile and web application development platform, offers a comprehensive suite of tools and services, including Firebase Phone Authentication. This feature allows developers to add phone number authentication to their applications with ease, leveraging Firebase’s robust infrastructure and security features.

Firebase Phone Authentication Features

Firebase Integration: Firebase Phone Authentication seamlessly integrates with Firebase’s ecosystem, offering a unified platform for application development.

Cross-Platform Support: Firebase Phone Authentication supports authentication across various platforms, including web, Android, and iOS applications.
Analytics and Reporting: Firebase provides analytics and reporting tools, allowing developers to track user authentication metrics and optimize their applications accordingly.
Firebase Phone Authentication Advantages
Reliability: Firebase Phone Authentication benefits from Firebase’s reliable infrastructure and extensive documentation, ensuring smooth integration and operation.
Community Support: Firebase boasts a large community of developers and resources, facilitating troubleshooting and knowledge sharing.
Advanced Features: In addition to phone number authentication, Firebase offers a range of features such as cloud storage, real-time database, and machine learning capabilities, enhancing the overall functionality of applications.

Conclusion
Both Phone Email’s ‘Login with Phone’ button and Firebase Phone Authentication offer valuable solutions for phone number verification. While Firebase provides a comprehensive platform with advanced features and community support, Phone Email’s solution stands out for its simplicity, cost-effectiveness, and seamless integration. Depending on your specific requirements and preferences, either option can serve as an effective solution for enhancing user authentication and security.

FAQ
What is Phone Email’s ‘Login with Phone’ Button?
Phone Email’s ‘Login with Phone’ button is a solution for phone number verification that simplifies the authentication process for users on websites and mobile apps.

What is Firebase?
Firebase is a mobile and web application development platform by Google that offers a wide range of tools and services, including Firebase Phone Authentication.

What are the differences between Phone Email’s ‘Login with Phone’ button and Firebase Phone Authentication?
The main differences lie in their features, integration process, and cost-effectiveness. While Firebase offers a comprehensive platform with advanced features and community support, Phone Email’s solution provides a simple, cost-effective solution for seamless phone number verification.

Explore Phone Email’s ‘Login with Phone’ button in action with our demo page, and refer to our documentation for further details. Make the switch from Firebase to Phone Email’s solution and experience enhanced security and user experience in your applications.

Integrate single sign-on "Sign in With Phone" button in React JS

Phone Email — Thu, 21 Mar 2024 11:17:08 +0000

In today's digital landscape, seamless user authentication is paramount for web applications. While traditional email and password authentication methods persist, newer, more efficient methods are emerging. One such method gaining traction is the "Sign in With Phone" button, offering hassle-free authentication through SMS OTP verification.

Phone.Email introduces an innovative solution: the "Log in with Phone" button. This feature empowers users to verify their phone numbers at minimal cost, enhancing security and user experience. This button seamlessly integrates into client websites, streamlining the authentication process.

Key Features of Using Phone.Email's Single Sign-On OTP Verification Button

Cost-Effective Authentication: Traditional methods often incur costs for SMS OTP verification. With Phone.Email's solution, authentication via SMS is offered at no or minimal expense, making it a cost-effective option for businesses.
Enhanced Security: Phone.Email's OTP verification adds an extra layer of security to user authentication. By leveraging SMS OTP, the likelihood of unauthorized access is significantly reduced, enhancing overall data protection.
User-Friendly Integration: Integrating the "Sign in With Phone" button into client websites is straightforward. With clear documentation and code examples, developers can implement this feature seamlessly, minimizing development time and effort.

Suggest "Login With Phone" Button to Automatically Send SMS OTP Using SMS API

The "Login with Phone" button simplifies the authentication process by automatically sending an SMS OTP to the user's mobile device. This functionality is achieved through integration with an SMS API, ensuring prompt delivery of OTPs for verification.

To implement this feature, follow these integration steps:

Create Admin Account: Begin by creating an admin account on Phone.Email's platform. Navigate to the profile section to obtain the client ID necessary for integration.

Add "Login With Phone" Button: Incorporate the "Login with Phone" button into your React JS application. Github for this code snippet is: https://github.com/phoneemail/sign-in-with-phone-reactjs

Below is a code example demonstrating the button's implementation:

<button style={{ display: 'flex', alignItems: 'center', justifyContent: 'center', padding: '14px 20px', backgroundColor: '#02BD7E', fontWeight: 'bold', color: '#ffffff', border: 'none', borderRadius: '3px', fontSize: 'inherit', cursor: 'pointer', maxWidth: '320px', width: '100%' }} id="btn_ph_login" name="btn_ph_login" type="button" onClick={() => window.open(AUTH_URL, 'peLoginWindow', 'toolbar=0,scrollbars=0,location=0,statusbar=0,menubar=0,resizable=0, width=500, height=560, top=' + (window.screen.height - 600) / 2 + ', left=' + (window.screen.width - 500) / 2)}> <img src="https://storage.googleapis.com/prod-phoneemail-prof-images/phem-widgets/phem-phone.svg" alt="phone email" style={{ marginRight: "10px" }} /> Sign In with Phone </button>

Get Verified Phone Numbers Back: Retrieve verified phone numbers from Phone.Email's API after successful authentication. Github for this code snippet is: https://github.com/phoneemail/sign-in-with-phone-reactjs. Utilize the provided code snippet to fetch user details, including the phone number:

const url = "https://eapi.phone.email/getuser";
const data = new FormData();

data.append("access_token", accessToken);
data.append("client_id", CLIENT_ID);

const response = await fetch(url, { method: "POST", body: data });

if (!response.ok) {
    throw new Error("Network response was not ok");
}

const responseData = await response.json();

if (responseData.status !== 200) {
    throw new Error("Something went wrong");
}

const phEmailJwt = responseData.ph_email_jwt;

setUserDetails({
    countryCode: responseData.country_code,
    phoneNo: responseData.phone_no,
    phEmailJwt: phEmailJwt
});

// Set cookie with 180-day expiration
const cookieExpire = new Date(Date.now() + 180 * 24 * 60 * 60 * 1000).toUTCString();
document.cookie = `ph_email_jwt=${phEmailJwt}; expires=${cookieExpire}; path=/`;

Conclusion

Incorporating the "Sign in With Phone" button into your React JS application offers numerous benefits, including enhanced security, cost-effectiveness, and user convenience. By following the provided integration steps and leveraging Phone.Email's documentation, developers can seamlessly implement OTP verification via SMS, improving the authentication experience for users.

Experience the seamless integration of OTP API using the "Log in with Phone" button in our demo. For detailed documentation on integration with React JS, visit our documentation page.

Integrate Log in with Phone on your Websites and Mobile Apps

Phone Email — Wed, 20 Mar 2024 10:33:58 +0000

In today's fast pace environment of technological advancement, convenience and ease of use are of utmost importance. When it comes to website and mobile app development, one of the ways to enhance user experience is by offering a seamless login process.
The traditional username and password method can be inconvenient and prone to security risks. That's where integrating log in with phone concept comes in.
The integration of phone-based login systems with OTP Verification on websites and mobile apps is becoming increasingly prevalent. By leveraging the power of mobile devices, users can log in to websites and mobile apps effortlessly using their phone numbers.
In this article, we will explore the benefits and best practices of integrating log in with phone, and how it can revolutionize the authentication process for users.

Benefits of Integrating Log in with Phone Number

First and foremost, it enhances security. With traditional username and password logins, users often rely on weak passwords or reuse the same password across multiple platforms, leaving them vulnerable to hacking and identity theft. By integrating log in with phone, users are provided with an added layer of security as their phone numbers act as a unique identifier.
Secondly, integrating log in with phone number verification streamlines the authentication process. Users no longer need to remember and enter complex passwords, making the login experience hassle-free and convenient. This seamless user experience leads to increased user satisfaction and higher user retention rates.
Moreover, integrating log in with phone numbers opens up opportunities for businesses to collect valuable user data. By linking users' phone numbers to their accounts, businesses can gain a deeper understanding of their target audience and personalize their marketing strategies accordingly.
By requiring OTP verification, websites and mobiles apps owners can significantly reduce the creation of fake or duplicate accounts on their platform, ensuring a more authentic user base.

How to Integrate Log in with Phone Button on your Websites with Phone Email
Now that we understand the benefits of integrating log in with phone, let's explore how you can implement this feature on your websites with Phone Email.

By using the phone number verification plugin, you ensure a seamless user experience while also adding an extra layer of security. In this section, we will outline the steps required to integrate this feature into your website.

Here's a step-by-step guide to effortlessly integrate the "Login with Phone" web plugin into your website:

Obtain your Client ID: To kickstart the process, navigate to the Profile Details section within the Admin Dashboard at admin.phone.email. Register your website or Business and retrieve your unique CLIENT_ID, a crucial identifier for configuring the "Login with Phone" button on your website. You'll need to update the Client ID in the provided code snippet during the integration process.
Integrate the Login with Phone button: Integration entails two essential flows:
Display Login button: Incorporate this login code snippet into your web page to showcase the enticing "Login with Phone" button. It's your gateway to simplified user OTP verification.
Handle response: Upon successful phone number verification, an access token is returned through the redirect link (your webpage link). This code snippet extracts the access token from the query parameter and invokes the eapi.phone.email/getuser API to fetch the verified mobile number.
Test Login with Phone Button: Test the Login page locally or on your domain, if an error occurs, check the CLIENT_ID again and API key. If still any error occurs, please don’t hesitate to reach out to us for further assistance in integration process.
Customize User Interface of Login Button: Customize the user interface to align with your website's aesthetics and requirements. You can change Login button colors, fonts, and size to make it fit seamlessly according to your website theme. You can also consider adding icons and hover effects for better visual appeal. Please make sure it's responsive and accessible to users on different platforms like mobile, tablets and desktops. Stay consistent with your brand's identity.

Supported Technologies to Integrate Login Phone Number Verification Plugin

PHP
React JS
Angular JS
Next JS
Vue JS
Node JS
Java
Python

[Technical Note: The code snippet required to integrate the login button onto your website is provided on the Phone.Email document section for each supported technology. Simply copy the code as per the technology of your website and replace the CLIENT_ID variable with the client ID obtained in step 1 for seamless integration.]

Once integrated, users visiting your website will encounter the convenient "Login with Phone" button, enhancing user experience and bolstering security.

If you encounter any technical hurdles during the integration process, Phone.email’s team is readily available to provide assistance. Embrace the simplicity of OTP SMS API completely free and elevate your website's authentication process today!
Additionally, consider incorporating Phone Email’s single sign-on (SSO) or one-tap sign-in functionality into your websites to further enhance user convenience and streamline the authentication process. This feature allows users to log in quickly and securely using their existing accounts from verified phone number.

How to Integrate One Tap Login or Signup on Websites

Access Admin Dashboard: Log in to your Phone Email admin dashboard using your credentials and navigate to the "Lead Capture Plugin" section.
Add the Lead Capture Plugin Script: Once in the "Lead Capture Plugin" section, locate the option to generate the plugin script. Customize the settings according to your preferences, such as the fields to capture (e.g., name, email, phone number), styling options, and behavior (e.g., popup, embedded form). Copy the generated plugin script provided by Phone Email.
Integrate the Script into your Website: Access the HTML source code of your website where you want to integrate the Lead Capture Plugin. Paste the copied plugin script into the appropriate section of your website's HTML code. This could be within the
section for scripts that need to be loaded before the page content, or within the section for scripts that need to be executed after the page loads.
Customize Display Settings (Optional): If desired, customize the display settings of the Lead Capture Plugin to match the design and layout of your website. This includes adjusting colors, fonts, sizes, and positioning.
Test the Integration: Once the plugin script is integrated, test the functionality of the Lead Capture Plugin on your website to ensure that it captures leads correctly and behaves as expected. Submit test entries to verify that lead data is being captured accurately and is visible in your Phone Email dashboard.
Create Login Success Page (Optional): If you choose to create a login success page, design a page that provides a seamless experience for users after they have successfully logged in using their phone number or other authentication methods. This page include personalized messages, additional calls-to-action, or redirection to relevant sections of your website.
Monitor and Analyze Leads: Regularly monitor the leads captured through the Lead Capture Plugin in your Phone Email dashboard. Analyze lead data to gain insights into your audience demographics, behavior, and preferences. Use this information to optimize your marketing strategies, personalize communication with leads, and improve overall lead conversion rates.

Demo: To check the seamless functionality of One-Tap Login with Phone, explore our hosted demo login page titled "Try One-Tap Login With Phone."

[Technical Note: The code snippet required to integrate the One Tap login button onto your website is provided on the Phone.Email One Tap Signin Doc for each supported technology. Simply copy the code as per the technology of your website and replace the CLIENT_ID variable with the client ID obtained in step 1 for seamless integration.]

How to Integrate Log in with Phone Button on Mobile Apps with Phone Email

Now that we have covered the process of integrating log in with phone on websites, let's delve into the steps for implementing this feature on your mobile apps.

Get Client ID: In order to integrate the “Login with Phone” functionality, you will need to obtain a Client Id from the Phone Email Admin Panel. This Client Id will be used to authenticate your app’s requests for phone number verification or OTP verification.
Login Button Implementation: Implement a login button in your mobile app’s user interface. This button will serve as the trigger to verify phone number process. When the user taps on this button, they will be prompted to enter their phone number.
Implement the Button Functionality: When the user taps the “Log in with Phone” button, initiate the login process using their phone number. Use the appropriate CLIENT ID provided by Phone Email OTP Verification plugin to handle phone number authentication.
Request Phone Number: Prompt the user to input their phone number in a text field or using a pre-filled option if available (e.g., retrieving from device contacts). Implement validation to ensure the phone number format is correct (e.g., country code, no special characters).
Send Verification Code: Once the user submits their phone number, use the authentication service to send a verification code to that number via SMS or another method. Ensure the verification code is received promptly and accurately.
Verify Code: Provide a text field for users to input the verification code they received. Validate the entered code against the one sent by the authentication service.
Handle Authentication Response: Upon successful verification, authenticate the user and proceed with the login process. If the verification fails, prompt the user to retry or offer alternative login methods.
Handle Errors Gracefully: Implement error handling for scenarios such as invalid phone numbers, network issues, or verification code timeouts. Display meaningful error messages to guide users through the process.
Secure User Data: Ensure the security of user data by following best practices for authentication and data storage. Encrypt sensitive information and adhere to relevant privacy regulations (e.g., GDPR, CCPA).
Test Thoroughly: Conduct extensive testing to ensure the “Log in with Phone” functionality works seamlessly across different devices, network conditions, and user scenarios. Test for edge cases and potential security vulnerabilities.
Optimize User Experience: Continuously gather feedback from users to improve the login process. Monitor analytics to identify any usability issues or drop-off points in the authentication flow. Iterate on the design and functionality based on user feedback and data analysis.

These steps cover the integration of the “Login with Phone” functionality in your mobile app.

Technologies that support phone email Login with Phone Plugin on mobile apps are:

Kotlin/Android
Unity
React Native
Swift
Flutter (App)

For Complete information related to code snippet and technologies that supports to integrate Log in with Phone plugin into your mobile app please visit Phone Email’s Log in with Phone Mobile Doc.

Enhance Security with Log in with Phone

One of the main advantages of using log in with phone is the enhanced security it provides compared to traditional username-password authentication. By leveraging the user's phone number as an additional factor for authentication, you can significantly reduce the risk of unauthorized access and account breaches.

The phone number serves as a unique identifier for each user, making it more difficult for malicious actors to impersonate someone else. Additionally, implementing proper error handling mechanisms, as discussed in the previous section, ensures that invalid phone numbers or verification code errors are appropriately dealt with, further minimizing the possibility of unauthorized access.
Moreover, using log in with phone allows you to implement extra security measures, such as rate limiting and brute force protection. These measures help prevent malicious users from attempting multiple logins with incorrect verification codes or from launching automated attacks to guess the codes.

Overall, by integrating log in with phone on your websites and mobile apps, you can enhance the security of user accounts, reducing the risk of unauthorized access and providing users with peace of mind.

Why to Choose Phone Email’s Login with Phone API?

Start Free: Phone Email Free SMS OTP API offers a free plan that allows you to send up to 10,000 SMS per month in India, USA, and Canada. This allows users to test and evaluate the service without any upfront costs.
Cost-Effective Pricing: If anyone need to send more than 10,000 SMS per month, we offer very competitive prices per SMS. You only pay for the number of SMS you send, allowing you to scale your usage and costs as your business grows.
Easy Integration: Our Phone Number Verification API is designed to be easy to integrate into your existing systems and applications. With clear documentation of code snippets and support, you can quickly implement the API and start verifying phone numbers.
Attractive Onboarding Email Templates: In addition to phone number verification, Phone Email also provides five attractive onboarding email templates. These templates can be used to create engaging and personalized email campaigns to welcome new users and guide them through the further onboarding process.
API Integration for Sending Emails: Phone.Email's API not only supports phone number verification but also allows you to send emails programmatically. This integration enables you to automate your email communication and enhance your customer engagement.
Email & SMS Campaign Management: Phone Email App provides a comprehensive platform for managing both email and SMS campaigns. You can easily create, schedule, and track your campaigns, ensuring effective communication with your audience.
Email Logs: Phone Email's platform keeps logs of all your sent emails, allowing you to review and analyze your email communication history. This feature helps you track the success of your campaigns and make data-driven decisions for future improvements.
Auto Subscriber Management: With Phone.Email, you can automate subscriber management, including adding and removing subscribers from your email lists. This simplifies the process of managing your subscriber base and ensures compliance with data protection regulations.
Real-Time Analytics: Phone Email App provides real-time analytics that give you insights into the performance of your email and SMS campaigns. You can track metrics such as open rates, click-through rates, and conversion rates, allowing you to optimize your campaigns for better results.

By choosing Phone Email's Login with Phone API, you gain access to a reliable and cost-effective solution for verifying phone numbers, sending emails, and managing your email and SMS campaigns. With easy integration, attractive templates, and comprehensive campaign management features, Phone Email offers a complete solution for your communication needs.

Conclusion
In conclusion, integrating log in with phone on your websites and mobile apps not only enhances security but also provides convenience for users. By leveraging the user's phone number as a factor for authentication, you can significantly reduce the risk of unauthorized access and account breaches.
Through proper error handling mechanisms, you can ensure that invalid phone numbers or verification code errors are appropriately dealt with, minimizing the possibility of unauthorized access. Implementing extra security measures, such as rate limiting and brute force protection, further enhances the security of user accounts.
By providing this secure and user-friendly OTP Verification login option, you can give your users peace of mind and build trust in your platform. Stay tuned for more informative and relevant content on the topic of website and app integrations in phone email’s future blog posts.

Phone number verification via OTP in Node JS

Phone Email — Sat, 09 Mar 2024 20:11:05 +0000

In the rapidly evolving landscape of web and mobile applications, ensuring a secure and seamless user experience is paramount. Traditional username-password combinations are giving way to more innovative authentication methods. One such breakthrough is the "Log in with Phone" button, a solution offered by Phone Email that allows users to verify their phone numbers at little to no cost.

Introduction to "Log in with Phone" Button
The "Log in with Phone" button operates similarly to Firebase phone authentication. It is embedded in client websites or mobile apps, triggering a new authentication window upon clicking. This window prompts users to enter their country code and mobile number, subsequently verifying the provided information using a one-time passcode (OTP) sent to the user's mobile device. Once the phone number is verified, control returns to the client's website or app, armed with an access token for further interactions.

How "Log in with Phone" Button Automatically Sends SMS OTP
The heart of the "Log in with Phone" functionality lies in its ability to seamlessly send SMS OTP to users. This process involves the generation and delivery of a unique passcode to the provided mobile number, serving as a secure method of authentication. The automation of this SMS OTP delivery adds a layer of convenience and security to the user verification process.

Integration Steps for Node.js
1. Create Admin Account
Begin by creating an admin account on the Phone Email platform. This account will provide the necessary credentials for integrating the “Log in with Phone” button into your Node.js application.

2. Add "Log in with Phone" Button to Call Free SMS OTP API in React JS Frontend
To integrate the "Log in with Phone" button into your React JS frontend, follow these steps:

// code snippet for integrating "Log in with phone" button

import React, { useEffect, useState } from "react";

const App = () => {
  const searchParams = new URLSearchParams(window.location.search);
  const accessToken = searchParams.get('access_token');

  // Replace with your actual CLIENT_ID
  const CLIENT_ID = "YOUR_CLIENT_ID";

  const REDIRECT_URL = window.location.href;
  const AUTH_URL = `https://auth.phone.email/log-in?client_id=${CLIENT_ID}&redirect_url=${REDIRECT_URL}`;

  // Use state to manage user details
  const [userDetails, setUserDetails] = useState({
    countryCode: "",
    phoneNo: "",
    phEmailJwt: ""
  });


  useEffect(() => {
    if (accessToken) {
      httpRequest();
    }
  }, [accessToken]);

  return (
    <React.Fragment>
      {!accessToken && (
        <div style={{ display: 'flex', alignItems: 'center', justifyContent: 'center', margin: '50px 30px' }}>
          <div style={{ color: '#024430 !important', textAlign: 'center', backgroundColor: '#fff', padding: '30px', borderRadius: '0.5rem', boxShadow: '0 1px 3px rgba(17, 24, 39, .09)', width: '100%', maxWidth: '420px', margin: '0 auto', fontFamily: 'sans-serif, serif, system-ui, -apple-system, BlinkMacSystemFont, \'Segoe UI\', Roboto, Oxygen, Ubuntu, Cantarell, \'Open Sans\', \'Helvetica Neue\', sans-serif', lineHeight: '28px', display: 'flex', flexDirection: 'column', alignItems: 'center', justifyContent: 'center' }}>
            <img className="phe-login-img" width="250px" src="https://storage.googleapis.com/prod-phoneemail-prof-images/phem-widgets/phe-signin-box.svg"
              alt="phone email login demo" />
            <h1 style={{ margin: "10px" }}>Sign In</h1>
            <p style={{ color: "#a6a6a6" }}>Welcome to Sign In with Phone</p>
            <button
              style={{ display: 'flex', alignItems: 'center', justifyContent: 'center', padding: '14px 20px', backgroundColor: '#02BD7E', fontWeight: 'bold', color: '#ffffff', border: 'none', borderRadius: '3px', fontSize: 'inherit', cursor: 'pointer', maxWidth: '320px', width: '100%' }}
              id="btn_ph_login"
              name="btn_ph_login"
              type="button"
              onClick={() => window.open(AUTH_URL, 'peLoginWindow', 'toolbar=0,scrollbars=0,location=0,statusbar=0,menubar=0,resizable=0, width=500, height=560, top=' + (window.screen.height - 600) / 2 + ', left=' + (window.screen.width - 500) / 2)}>
              <img src="https://storage.googleapis.com/prod-phoneemail-prof-images/phem-widgets/phem-phone.svg"
                alt="phone email" style={{ marginRight: "10px" }} />
              Sign In with Phone
            </button>
          </div>
        </div>
      )}

      {accessToken && (
        <div style={{ display: 'flex', alignItems: 'center', justifyContent: 'center', margin: '50px 30px' }}>
          <div style={{ color: '#024430 !important', textAlign: 'center', backgroundColor: '#fff', padding: '30px', borderRadius: '0.5rem', boxShadow: '0 1px 3px rgba(17, 24, 39, .09)', width: '100%', maxWidth: '420px', margin: '0 auto', fontFamily: 'sans-serif, serif, system-ui, -apple-system, BlinkMacSystemFont, \'Segoe UI\', Roboto, Oxygen, Ubuntu, Cantarell, \'Open Sans\', \'Helvetica Neue\', sans-serif', lineHeight: '28px', display: 'flex', flexDirection: 'column', alignItems: 'center', justifyContent: 'center', }}>
            <img className="phe-login-img" width="250px" src="https://storage.googleapis.com/prod-phoneemail-prof-images/phem-widgets/phe-signin-success.svg" alt="phone email login demo" />
            <div className="phem-card-body">
              <h1>Welcome!</h1>
              <h4 style={{ lineHeight: "36px" }}>You are logged in successfully with <br />
                {userDetails.countryCode} {userDetails.phoneNo}
              </h4>
            </div>
            <button style={{ display: 'flex', alignItems: 'center', justifyContent: 'center', padding: '14px 20px', backgroundColor: '#02BD7E', fontWeight: 'bold', color: '#ffffff', border: 'none', borderRadius: '3px', fontSize: 'inherit', cursor: 'pointer', maxWidth: '320px', width: '100%', }} onClick={() => window.location.href = '/'}>Back</button>
          </div>
        </div>
      )}
    </React.Fragment>
  );
};

export default App;

Ensure to replace YOUR_CLIENT_ID with your actual client ID.

3. Get Verified Phone Numbers Back in Node.js Using getuser Rest API
After successful phone number verification, retrieve verified phone numbers back in Node.js using the getuser REST API. Pass the access token and client ID in the request parameters of the getuser API call. Check the GitHub repository here for the complete code snippet.

// React JS code snippet for integrating "Log in with phone" button
// GitHub: https://github.com/phoneemail/sign-in-with-phone-reactjs
const httpRequest = async () => {
    try {
      const url = "https://eapi.phone.email/getuser";
      const data = new FormData();

      data.append("access_token", accessToken);
      data.append("client_id", CLIENT_ID);

      const response = await fetch(url, { method: "POST", body: data });

      if (!response.ok) {
        throw new Error("Network response was not ok");
      }

      const responseData = await response.json();

      if (responseData.status !== 200) {
        throw new Error("Something went wrong");
      }

      const phEmailJwt = responseData.ph_email_jwt;

      setUserDetails({
        countryCode: responseData.country_code,
        phoneNo: responseData.phone_no,
        phEmailJwt: phEmailJwt
      });

      // Register User: As the user phone number has been verified successfully. If user corrosponding to this verified  mobile number does not exist in your user table then register the user by creating a row in user table. If user already exists then simply continue to the next step.

    } catch (error) {
      console.error("Fetch error:", error);
    }
  };

FAQs
Q: What is OTP or passcode?
A: OTP stands for One-Time Passcode. It is a unique, temporary code sent to a user's mobile device for authentication purposes.

Q: What is Phone Authentication?
A: Phone authentication is a secure method of verifying a user's identity by validating their mobile phone number using methods such as OTP.

Q: How does "Log in with Phone" work?
A: The "Log in with Phone" button triggers an authentication window where users enter their country code and mobile number. Upon verification, an access token is provided for further interactions.

Q: How does OTP verification work?
A: OTP verification involves sending a one-time passcode to the user's mobile device. The user then enters this code to confirm their identity.

Conclusion
Embrace the future of user authentication with the "Log in with Phone" button and the seamless integration of free SMS OTP services in Node.js. Elevate your application's security while providing a user-friendly experience. Get started today and revolutionize the way users verify their identities.

Explore further:

Phone Authentication Demo using "Log in with Phone" Button
Read Docs