> Toden documentation. For the full index fetch /llms.txt. Every page is available as Markdown by appending .md to its URL. Identity verification uses /api/kyc, Risk Intelligence uses /api/v1; they are separate contracts with different error shapes. Never invent an endpoint, field or enum value: read the API reference page for the operation first.

# Finding duplicate customers

> Video: How face search finds a person who already has an account, how it is configured, and how a match appears on a verification.

## What this video covers

How face search finds a person who already has an account, how it is configured, and how a match appears on a verification.

## The written version

Every step shown in the video is written out in full here:

* [Lists](/user-verification/workflows/lists)

Original title: "One Person, Two Accounts: Finding Duplicate Customers With Face Search". [Watch on YouTube](https://www.youtube.com/watch?v=zmgurZzbeN0).