rijensky

OtpPal lets your WordPress site send and verify OTP (One-Time Password) messages via WhatsApp. This plugin enables secure phone number verification for your WordPress forms, helping prevent spam and ensuring legitimate user submissions.
Key Features:
<ul>
<li>WhatsApp OTP Delivery: Send one-time passwords directly to users via WhatsApp</li>
<li>Form Plugin Integrations: Seamless integration with various wordpress form plugins for phone verification</li>
<li>Flexible Phone Input: Support for both international and national phone number formats</li>
<li>Easy Configuration: Simple setup through WordPress admin panel</li>
<li>Secure Verification: Server-side validation ensures secure OTP verification</li>
<li>Rate Limiting: Built-in protection against abuse (OtpPal.com)</li>
<li>Customizable UI: Clean, responsive lightbox interface for OTP input</li>
</ul>
Use Cases:
<ul>
<li>Passwordless Logins</li>
<li>Verify phone numbers in contact forms</li>
<li>Prevent spam submissions with phone verification</li>
<li>Ensure legitimate user contact information</li>
</ul>
<h3>Configuration</h3>
<ol>
<li>Navigate to OtpPal > Settings in your WordPress admin panel</li>
<li>Enter your OtpPal API key</li>
<li>Choose your preferred Phone Format:
<ul>
<li>International: Users enter phone numbers with country code (e.g., +1234567890)</li>
<li>National: Users enter phone numbers without country code (e.g., 1234567890)</li>
</ul>
</li>
<li>If using National format, select a Default Country for phone number validation</li>
<li>Click Save Settings</li>
</ol>
<h3>Usage</h3>
Enable passwordless login by embedding the login button anywhere on your site with the [otppal_login] shortcode. 
Add an in-form verifiable phone input using the otppal_phone input, or add a verification modal using the otppal_verify input. 
You can customize the appearance of the login button and the verification modal in the plugin’s config.
OtpPal supports CF7, Elementor Pro, WPForms, Gravity Forms, Fluent Forms, Ninja Forms, Formidable Forms, SureForms 
If you need another integration, please to contact us.
OtpPal will automatically:
<ul>
<li>Initialize the embedded phone widget using your global OtpPal settings (phone format, default country).</li>
<li>Intercept the form submission, open the OTP modal, and only submit after successful verification.</li>
<li>
Write the verified phone number into a hidden field so your form plugin receives it like any other field.
</li>
<li>
Use either <code>otppal_phone</code> or <code>otppal_verify</code> in a single form – never use both.
</li>
</ul>
<h3>Support</h3>
For support, please visit the plugin’s support forum or contact the plugin author.

OtpPal

Client-side plugin for OtpPal – Send and verify OTPs via WhatsApp.

Daisuke Takahashi

This plugin adds SMS support to <a href="https://wordpress.org/plugins/two-factor/" rel="ugc">Two Factor</a> with Twilio.
<h3>Notice</h3>
<ul>
<li>Important: To use this plugin, check following.
<ol>
<li>Installed and activated the latest version of <a href="https://wordpress.org/plugins/two-factor/" rel="ugc">Two Factor</a></li>
<li>Twilio account and Twilio number which supports SMS. For details, please contact Twilio support.</li>
</ol>
</li>
</ul>
<h3>License</h3>
<ul>
<li>Copyright (c) 2012-2014 <a href="http://www.extendwings.com/" rel="nofollow ugc">Daisuke Takahashi(Extend Wings)</a></li>
<li>Portions (c) 2010-2012 Web Online.</li>
<li>Unless otherwise stated, all files in this repo is licensed under GNU AFFERO GENERAL PUBLIC LICENSE, Version 3. See LICENSE file.</li>
</ul>
<h4>The MIT License</h4>
<ul>
<li>includes/Twilio/
<ul>
<li>Copyright (c) 2011 Twilio, Inc. and Neuman Vong</li>
<li>Licensed under <a href="https://raw.githubusercontent.com/twilio/twilio-php/9b83e2f1c480e3fb4e05a833b325c5afa43520fb/LICENSE" rel="nofollow ugc">the MIT License</a></li>
<li>Fetched from <a href="https://github.com/twilio/twilio-php/" rel="nofollow ugc">twilio/twilio-php</a></li>
<li>Version: 4.3.0</li>
</ul>
</li>
</ul>

Two Factor SMS

Add SMS support to "Two Factor" feature as a plugin

OtpPal vs Two Factor SMS