WebInk Digital

<p>This plugin is an add-on for the <a href="https://wordpress.org/plugins/booking/" rel="ugc">Booking Calendar</a> plugin and requires it to function (version 10.10.2 or newer).</p>
<p>It enhances booking security by introducing One-Time Password (OTP) verification via SMS or email. When a user attempts to confirm a booking, they are prompted to verify the action with an OTP, helping to ensure the authenticity of the request.</p>
<p>SMS verification is provided via the <a href="https://sms.to" rel="nofollow ugc">SMS.to</a> service. You must have an active SMS.to account and API key configured in the plugin settings to enable SMS delivery.</p>
<h3>External Services</h3>
<p>This plugin connects to an external service to send One-Time Passwords (OTP) via SMS as part of the booking verification process.</p>
<p><strong>Service Used:</strong> <a href="https://sms.to" rel="nofollow ugc">SMS.to</a><br />
<strong>What it’s used for:</strong> Sending OTPs (One-Time Passwords) via SMS during booking confirmations.<br />
<strong>What data is sent and when:</strong><br />
– The recipient’s phone number<br />
– The OTP message content<br />
These are sent to the SMS.to API at the time a booking requires verification via SMS.</p>
<p><strong>Terms of Service:</strong> https://sms.to/terms/<br />
<strong>Privacy Policy:</strong> https://sms.to/privacy-policy/</p>


OTP Add-on for Booking Calendar

Adds One-Time Password (OTP) verification via SMS or email to the Booking Calendar plugin for secure booking confirmations.

Chandan Shrivastava

<p><strong>Email OTP Authenticator</strong> is a lightweight authentication plugin for WordPress that combines passwordless login, quick registration, optional 2FA and session protection into one flexible solution.</p>
<p>Built using independent security layers instead of a monolithic system, the plugin loads only the required components during use to keep runtime execution compact and avoid external service dependency.</p>
<h3>Delivering these key benefits:</h3>
<ul>
<li>Reduce login friction</li>
<li>Increase signup conversions</li>
<li>Reduce password reset requests</li>
<li>Strengthen multi-layered website security</li>
<li>Enhance user trust with secure authentication</li>
</ul>
<p>Designed to make WordPress authentication faster, smarter and more secure.</p>
<h3>Authentication Layers</h3>
<p>The plugin is engineered around three dedicated security Layers:</p>
<p><strong>Access Layer</strong></p>
<p>Handles secure user entry through passwordless authentication.</p>
<p>Features:<br />
* OTP Login<br />
* OTP Registration<br />
* Guest Verification<br />
* Email authorization<br />
* Fast Authentication Flow</p>
<p><strong>Validation Layer</strong></p>
<p>Adds identity confirmation and verification controls.</p>
<p>Features:<br />
* New Device detection<br />
* Auto-popup with UI lock<br />
* Parallel login validation<br />
* Two-Factor Authentication<br />
* Login Validity Enforcement</p>
<p><strong>Security Layer</strong></p>
<p>Protects active sessions and detects abnormal activity.</p>
<p>Features:<br />
* Dynamic Session Shield<br />
* Session Validity Check<br />
* Session Inactivity Lock<br />
* Adaptive 2FA Enforcement<br />
* Suspicious Activity Guard</p>
<h3>Lightweight By Design</h3>
<p>Built to stay lightweight.</p>
<p>Although the complete package includes templates, images and supporting resources for setup and compatibility, the actual authentication runtime remains compact.</p>
<ul>
<li>Admin Browser Load: ~97 KB</li>
<li>Admin PHP Runtime: ~564 KB</li>
<li><strong>Frontend Browser Load: ~68 KB</strong></li>
<li><strong>Frontend PHP Runtime: ~274 KB</strong></li>
<li>Templates & visual assets: ~2.1 MB</li>
<li>Distribution package (zipped): ~2.3 MB</li>
<li>Distribution package (unzipped): ~3.6 MB</li>
</ul>
<p>Only required components are loaded during use.<br />
No external APIs, frameworks or unnecessary scripts.</p>
<p><strong>Plugin runtime execution is highly optimized and fast.</strong><br />
<strong>However, overall performance also depends on external factors.</strong></p>
<h3>Key Highlights</h3>
<ul>
<li><strong>Quick Login & Signup</strong> – Instant, easy, and password-free; Login & signup with OTP.</li>
<li><strong>Built-in Two-Factor Authentication</strong> – Additional identity protection layer.</li>
<li><strong>Verified Access Control</strong> – Verify visitors without account for access to restricted pages.</li>
<li><strong>Adaptive Session Shield</strong> – Intelligent session protection engine.</li>
<li><strong>Zero External Dependency</strong> – Works without third-party services.</li>
<li><strong>Modern Vanilla JavaScript</strong> – No jQuery dependency.</li>
<li><strong>Flexible Integration Options</strong> – Add authentication anywhere.</li>
<li><strong>Complete Admin Control</strong> – Fine-tune authentication behavior.</li>
<li><strong>Built-in Interface System</strong> – Attractive ready-to-use templates.</li>
<li><strong>Lightweight & Fast</strong> – Optimized for performance.</li>
</ul>
<h3>Flexible Integration Options</h3>
<p>Add authentication forms anywhere on your website using simple integration methods.</p>
<p>Integration methods include:</p>
<ul>
<li>Shortcode integration (auto-popup, popup or inline forms)</li>
<li>Menu trigger integration (popup forms)</li>
<li>Redirect support for auto-popup & inline form pages</li>
<li>Multiple forms on the same page</li>
<li>Easy setup without coding complexity</li>
</ul>
<h3>Built-in Templates</h3>
<p>Attractive 27 ready-to-use templates with auto-popup, popup and inline support.</p>
<p>Easy-to-apply modern designs that match your website style, with options to customize pre-built templates or create your own.</p>
<h3>Complete Admin Control</h3>
<p>Customize authentication behavior, layout options, security restrictions and verification rules with ease. Admins gain complete control over user access and interaction across the website.</p>
<h3>Zero External Dependency</h3>
<p>Run a complete authentication system without relying on any third-party services.</p>
<ul>
<li>Full data control</li>
<li>Standalone operation</li>
<li>No external APIs required</li>
<li>Self-hosted OTP processing</li>
<li>Reliable authentication flow</li>
</ul>
<h3>Modern Architecture</h3>
<p>Built using modern development practices:</p>
<ul>
<li>Vanilla JavaScript implementation (no jQuery)</li>
<li>Modular resource loading</li>
<li>Secure token validation</li>
<li>Compact runtime execution</li>
<li>Optimized performance structure</li>
</ul>
<h3>Ideal Use Cases</h3>
<p>This plugin is ideal for:</p>
<ul>
<li>Membership websites</li>
<li>WooCommerce stores</li>
<li>SaaS dashboards</li>
<li>Community platforms</li>
<li>Agencies managing client websites</li>
<li>Developers needing flexible authentication</li>
<li>Beginners and small websites needing simple security</li>
</ul>
<p>Designed to scale from beginner websites to enterprise environments.</p>
<h3>Compatibility</h3>
<p>Works smoothly with popular WordPress tools:</p>
<ul>
<li>WooCommerce</li>
<li>Ultimate Member</li>
<li>MemberPress</li>
<li>BuddyPress</li>
<li>ProfileGrid</li>
<li>ProfilePress</li>
<li>User Registration</li>
<li>WP User Manager</li>
<li>Paid Memberships Pro</li>
<li>RegistrationMagic</li>
<li>Forminator</li>
<li>Login/Signup Popup plugins</li>
<li>And many more</li>
</ul>
<h3>Why Choose This Plugin</h3>
<ul>
<li>FAST – Quick OTP authentication process</li>
<li>FRIENDLY – Simple user experience</li>
<li>SMART – Intelligent access handling</li>
<li>SMOOTH – Clean UI integration</li>
<li>SECURED – Strong authentication protection</li>
</ul>
<h3>Basic Mode and Advanced Features</h3>
<p>Explore the default <strong>basic mode</strong> screenshots below, designed to be simple and beginner-friendly for non-technical admins. For screenshots of advanced integrations, customization, and extended functionality, visit the <a href="https://eotpa.cs7.in/docs/showcase.htm" rel="nofollow ugc">Plugin Showcase</a>.</p>
<h3>Support</h3>
<p>Feedback helps improve this plugin.<br />
Send suggestions or issues to:<br />
<a href="mailto:Mr.Chandan.Shrivastava@gmail.com" rel="nofollow ugc">Mr.Chandan.Shrivastava@gmail.com</a></p>
<h3>Notes</h3>
<p>This is the Lite version with advanced features included for exploration.<br />
Visit the <a href="https://eotpa.cs7.in/" rel="nofollow ugc">plugin homepage</a> to discover everything available across editions.</p>


Email OTP Authenticator – Login, Register, 2FA & Session Lock

A lightweight OTP-powered plugin for Login, Registration, 2FA Protection and Dynamic Session Security. It is FAST, FRIENDLY, SMART, SMOOTH & SECURE.

OTP Add-on for Booking Calendar vs Email OTP Authenticator – Login, Register, 2FA & Session Lock