For WordPress site owners seeking to eliminate the friction of traditional email-and-password registration, Digits: WordPress Mobile Phone Number OTP Signup and Login Form offers a robust, modern solution. Developed by UnitedOver, this plugin replaces cumbersome signup flows with a streamlined process where users can create an account and log in using just their mobile phone number and a One Time Password (OTP). By removing the need for passwords, reducing checkout abandonment, and supporting over 200 SMS gateways worldwide, Digits addresses a critical pain point for eCommerce stores, membership sites, and community platforms built on WooCommerce, BuddyPress, and other major WordPress plugins. With over 8,180 sales and a comprehensive feature set that now includes social logins, multi-factor authentication, and a drag-and-drop form builder, this plugin has become a go-to tool for improving user conversion rates and security.
Key Features
- Passwordless Login & Signup: Users can register and log in using only their mobile number and an OTP sent via SMS, eliminating the need to remember or manage passwords.
- 200+ SMS Gateway Integrations: Supports a vast array of global SMS providers including Twilio, Nexmo, Firebase (free OTP), Plivo, Clickatell, SendInBlue, and dozens more. Custom gateway integration is also available.
- Email OTP & Magic Link Support: In addition to SMS, users can verify their identity through email OTP or a passwordless magic link, offering flexibility for different user preferences.
- Social Login (Version 8.0+): Includes support for Facebook, Google, Apple, Twitter, LinkedIn, GitHub, TikTok, Spotify, Slack, and many other social platforms, allowing one-click registration.
- Drag-and-Drop Form Builder: A visual builder lets you customize signup and login forms with custom fields (text, dropdown, checkbox, radio, etc.), multi-step forms, and conditional logic.
- WooCommerce Integration: Fully compatible with WooCommerce — users can verify their phone number at checkout, search customers by mobile number in the admin order page, and seamlessly sync billing phone fields.
- Two-Factor and Multi-Factor Authentication (2FA/3FA): Offers advanced security layers including TOTP (Google Authenticator), hardware security keys, WebAuthn (device biometrics), and remote QR code login.
- Built-in Analytics Dashboard: Track login/signup data, view SMS logs, and monitor brute-force attempts directly from your WordPress admin.
- Country-Based Controls: Whitelist or block countries, auto-detect country codes with flags, and set default country codes for a localized experience.
- GDPR Compliant: Provides tools to handle user data responsibly, with options to disable registration, OTP, or email verification as needed.
Who Is This For? Use Cases
eCommerce Store Owners
If you run a WooCommerce store, Digits: WordPress Mobile Phone Number OTP Signup and Login Form can dramatically reduce cart abandonment. Traditional password-based checkouts often lose customers who forget their credentials. With Digits, customers can register and complete purchases using only their mobile number — no email verification or password required. The plugin also verifies phone numbers at checkout, adds a phone column to the user list for easy customer lookup, and ensures that billing phone fields sync automatically with the user’s registered mobile number.
Membership & Community Sites
For sites using BuddyPress, bbPress, or Ultimate Member, Digits simplifies onboarding. Users can join your community in seconds with just a mobile number. The login form can be displayed as a modal popup, and the drag-and-drop builder lets you add custom fields — like location or interests — directly to the registration form. The OTP-based recovery process also reduces support tickets related to forgotten passwords.
High-Security Platforms
Platforms handling sensitive user data — such as financial services, healthcare portals, or exclusive membership sites — benefit from Digits’ multi-factor authentication options. You can enforce 2FA or even 3FA (e.g., OTP + Google Authenticator + biometrics) based on user roles. The brute-force protection and IP whitelisting features add an extra layer of defense against unauthorized access.
International Businesses
With support for over 200 SMS gateways and country-specific message templates, Digits works globally. The ability to whitelist or block entire countries, auto-detect country codes, and send localized OTP messages makes it ideal for businesses with a diverse international audience.
Technical Details & Compatibility
Digits is built for WordPress and is fully compatible with the latest versions of WooCommerce, BuddyPress, Elementor, WPML, and most major themes. The plugin works with Firebase (free OTP for non-commercial use) as well as premium gateways. It supports reCAPTCHA v2/v3, hCaptcha, and Cloudflare Turnstile for spam protection. The changelog (available up to March 2026) confirms active development with frequent updates addressing compatibility, performance improvements, and new gateway integrations. The plugin is GDPR compliant and includes support for RTL languages. Note that minor updates (3rd decimal points) are delivered directly via the WordPress admin panel and are not always reflected in the public changelog.
Pros and Cons
Pros
- Huge gateway library: Over 200 SMS providers and custom gateway support ensure global coverage.
- Passwordless authentication: Reduces user drop-off and support requests related to password recovery.
- Flexible authentication methods: Supports SMS OTP, email OTP, magic links, social login, 2FA/3FA, and hardware security keys.
- Deep WooCommerce integration: Phone verification at checkout, user search by mobile number, and billing field sync.
- Drag-and-drop form builder: Empowers non-developers to create custom registration and login forms.
- Active development & strong support: Frequent updates, a comprehensive changelog, and a responsive author (UnitedOver).
- Excellent value: At $39.00, it replaces multiple premium plugins (e.g., social login, 2FA, custom forms).
Cons
- Learning curve for setup: With hundreds of options, new users may feel overwhelmed initially; the onboarding wizard helps, but some configuration is still complex.
- Minor updates not always in changelog: Developers rely on server-side updates for small fixes, which can make tracking every change difficult.
- Some gateways require additional configuration: Free gateways like Firebase work well, but premium SMS gateways may require API credentials and testing.
Frequently Asked Questions
Is Digits compatible with WooCommerce and other major plugins?
Yes, Digits: WordPress Mobile Phone Number OTP Signup and Login Form is fully compatible with the latest versions of WooCommerce, BuddyPress, bbPress, Elementor, WPML, and most popular membership and eCommerce plugins. The plugin also includes dedicated settings for syncing billing phone fields and searching users by mobile number in the order admin.
Does Digits support free SMS gateways for sending OTP?
Yes. One of the most popular options is Firebase, which allows you to send OTP messages for free (subject to Firebase’s terms). Digits also includes other free or freemium gateways like Twilio (with free credits), and many regional providers. For a full list of over 200 gateways, refer to the plugin’s description — most are paid services, but Firebase remains a strong free choice.
Can I customize the signup and login forms without coding?
Absolutely. Starting from version 8.0, Digits includes a powerful drag-and-drop form builder that lets you add custom fields, rearrange form elements, create multi-step forms, and apply conditional logic — all without writing a single line of code. You can also use the built-in theme editor to visually integrate modal popup buttons into your site.
Final Verdict
Digits: WordPress Mobile Phone Number OTP Signup and Login Form is an outstanding investment for any WordPress site owner who wants to simplify user registration, boost conversion rates, and enhance security. With over 8,180 sales and a stellar reputation from developer UnitedOver, the plugin has proven itself in real-world scenarios across eCommerce, membership, and high-security platforms. The sheer breadth of features — passwordless login, 200+ SMS gateways, social logins, 2FA/3FA, a drag-and-drop builder, and deep WooCommerce integration — makes it a true all-in-one authentication solution. At just $39.00, it delivers exceptional value, often replacing several separate plugins. Whether you’re looking to reduce checkout friction, eliminate password fatigue, or add enterprise-grade security, Digits provides a scalable, user-friendly, and regularly updated tool that will serve your site for years to come. Try it today and watch your user signup rates climb.
