# How to Approve Real Users and Block Fake Accounts at Sign Up with Lookup and Verify

DevFeed: [How to Approve Real Users and Block Fake Accounts at Sign Up with Lookup and Verify](<https://devfeed.tech/articles/how-to-approve-real-users-and-block-fake-accounts-at-sign-up-with-lookup-and-verify-16095.md>)

Original publisher: [Read original article](<https://www.twilio.com/en-us/blog/developers/tutorials/product/block-fake-accounts-lookup-verify-node>)

Author: Kelley Robinson

Published: 2026-08-31T00:00:00Z

Content type: tutorial

Language: en

Sources: [Twilio Blog](<https://devfeed.tech/sources/twilio-blog.md>)

Topics: [Node.js](<https://devfeed.tech/topics/node-js.md>), [Tutorial](<https://devfeed.tech/topics/tutorial.md>), [API](<https://devfeed.tech/topics/api.md>), [Security](<https://devfeed.tech/topics/security.md>), [JavaScript](<https://devfeed.tech/topics/javascript.md>), [Bot](<https://devfeed.tech/topics/bot.md>)

Tags: [api](<https://devfeed.tech/tags/api.md>), [bots](<https://devfeed.tech/tags/bots.md>), [developer-insights](<https://devfeed.tech/tags/developer-insights.md>), [fake-accounts](<https://devfeed.tech/tags/fake-accounts.md>), [fraud](<https://devfeed.tech/tags/fraud.md>), [how-to](<https://devfeed.tech/tags/how-to.md>), [javascript](<https://devfeed.tech/tags/javascript.md>), [node-js](<https://devfeed.tech/tags/node-js.md>), [onboarding](<https://devfeed.tech/tags/onboarding.md>), [tutorial](<https://devfeed.tech/tags/tutorial.md>), [verification](<https://devfeed.tech/tags/verification.md>)

## AI overview

This tutorial shows JavaScript developers how to build a Node.js onboarding flow with Twilio Lookup and Verify. It combines line type checks, line status checks, name-to-phone identity matching, and SMS OTP verification to filter fake accounts and fraud while minimizing friction for legitimate users.

## Source excerpt

Build a secure Node.js onboarding flow with Twilio. This tutorial covers 4 layers of defense: Line Type checks, Line Status, Identity Match (name-to-phone), and SMS OTP verification to stop bots and fraud.