How to Prevent Fake or Unverified Signups With WhatsApp OTP

How to Prevent Fake or Unverified Signups With WhatsApp OTP

https://www.memberstack.com/scripts/otp-verification-via-whatsapp

Cloneable:

https://webflow.com/made-in-webflow/website/otp-verification-via-whatsapp

Why/Use Cases –

• Preventing fake member registrations
• Protecting free trial offers against abuse

Fake signups and bot registrations can quickly clutter your member database and abuse valuable platform resources. With this script, you can require users to verify their phone number using a one-time password (OTP) sent through WhatsApp before completing the signup process on your Webflow site.

By adding this simple verification step, you ensure that new accounts are connected to real phone numbers. Since WhatsApp is widely used and familiar to most users, the process feels quick and intuitive while providing an effective barrier against automated or fraudulent registrations.

In this guide, we walk you through how to implement the script step by step, so you can protect your signup flow and keep your member base authentic.

How to prevent fake signups using WhatsApp OTP on Webflow

In order to set this up, we’re going to use MemberScript #152 – OTP Verification via WhatsApp in Webflow. Follow the link to get the code you’ll need to add to your page and watch a video tutorial on how to set everything up.

Setting it up

The first thing you’ll need to do is set up an account on whatsauth.com.

Once you’re in, create an app and click on Try it once it’s finished. Look at the page URL and copy your API key, we’re going to need this later.

Now go to your form, click on the field where users are supposed to enter their phone numbers and add the attributes:

• data-ms-code=”phone-number”
• data-ms-member=”phone-number”

You can add additional attributes if you want to change how the verification component looks and feels:

• data-ms-placeholder=”Click to validate phone number”
• data-ms-primary-color=”#2D62FF”
• data-ms-secondary-color=”#27AE60”
• data-ms-btn-text=”Verify via WhatsApp”

Making it work

Now that you’ve set everything up, you just need to add the MemberScript #152 custom code to your page, before the closing body tag. Replace the existing API key in the custom code with the one you copied earlier.

Unless there is a reason that you want the code sitewide, it would probably be best to use the code on just the pages where it would be relevant.

Don’t forget to also add the code for WhatsApp authentication from whatsauth.com to your site’s header.

Conclusion

That’s all you have to do to prevent fake or unverified signups with WhatsApp OTP on Webflow.

Requiring WhatsApp OTP verification during signup is a practical way to reduce fake accounts and bot registrations. It helps maintain a cleaner member database while protecting your platform from abuse.

With this script in place, your Webflow site gains an extra layer of security, ensuring that new members are genuine while still keeping the signup process simple and accessible.

If you want to use our demo project to get you started, just click the button below to add it to your project.

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