Why phone numbers are better than email addresses for login and authentication?


In today’s digital world, login, and authentication are critical for businesses and users. Traditionally, login and authentication have been based on email addresses, where the user provides their email address and password or receives an OTP via email to verify their identity and access the app or website. However, using email addresses for Login and Authentication has several drawbacks and limitations, such as the risk of impersonation and the unreliability of email addresses.

The Benefits of Phone Numbers for Login and Authentication

On the other hand, using phone numbers for login and authentication provides several benefits over email addresses. Phone numbers are unique and cannot be easily impersonated, making them more secure. Additionally, phone numbers are more reliable, are kept up-to-date, and offer a familiar and intuitive experience for users. By using phone numbers for authentication, businesses can provide their users with a more seamless and intuitive login experience, and improve the security, convenience, and user experience of the login process.

The Drawbacks of OTPs for Mobile Number Authentication

However, the use of OTPs is a major drawback of using mobile numbers as digital identities. OTPs can be easily intercepted or stolen by attackers and can be slow and inconvenient for users. While OTPs can provide an additional layer of security for the login and authentication process, they can also have several drawbacks and limitations that can impact the user experience and engagement and increase the costs and liabilities for businesses.

An Alternative Solution: WhatsApp Login

One alternative solution, such as “One-tap Sign in” can provide a more secure and user-friendly login experience by eliminating OTPs entirely.

Here is a video that shows how simple and secure is this:


In summary, using phone numbers for login and authentication is more secure and reliable than using email addresses. By using an alternative solution like “One-tap Sign in“, businesses can provide their users with a more secure, convenient, and user-friendly login experience.

Revolutionize the way you authenticate users with OTPLESS’s “One-tap Sign in” solution. By using the user’s WhatsApp account to verify their phone number, OTPLESS eliminates the need for OTPs, which are vulnerable to interception and brute-force attacks.

This solution provides a seamless and intuitive login experience for users, with the convenience and familiarity of WhatsApp. Plus, our clients have seen an increase in login conversion by 25%* after switching to their “One-tap Sign in”.

And the best part? Adding the “One-tap Sign in” button to your login page is quick and easy – it can be done within 5 minutes with a simple copy-paste process. Try “One-tap Sign in” now and see the benefits for yourself.

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