---
title: Preexisting Customer Sign Up Guide
description: This article will explain what happens when customers that have an existing Tymber account linked to your POS attempt to sign up with the same email or phone number through the e-commerce menu.
---

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# Preexisting Customer Sign Up Guide

[![Tymber Support](https://support.blaze.me/hs-fs/hubfs/secondary%20logo_color_2@300px.png?width=50&height=50&name=secondary%20logo_color_2@300px.png)](https://support.blaze.me/blog/ecommerce/author/tymber-support)

[Tymber Support](https://support.blaze.me/blog/ecommerce/author/tymber-support)  23 January, 2023

##### This article will explain what happens when customers that have an existing Tymber account linked to your POS attempt to sign up with the same email or phone number through the e-commerce menu.

 

- Upon launching the your Tymber e-commerce menu, all customers will need to **Sign Up for an Account** to complete a purchase through the menu.
- New customers will also be required to **Sign Up** **for an Account** the first time they complete a purchase through the menu.
- Customer profiles will be automatically linked in the POS via their original phone number.

- If a customer already has an existing Tymber profile linked to your **POS**, and another user attempts to sign up with the **same email** and **phone number**, they will experience the following:

![Email and Phone Number Duplicate](https://8611548.fs1.hubspotusercontent-na1.net/hub/8611548/hubfs/Email%20and%20Phone%20Number%20Duplicate.png?width=688&name=Email%20and%20Phone%20Number%20Duplicate.png)

- If a customer already has an existing profile in your **POS**, and attempts to sign up with the **same** **phone number and different email**, they will able able to complete the sign up process. 
    - After they have successfully placed their order through Tymber, the email will be updated in their POS to the new one entered through TMC Sign Up.
    - [Manage your Customers in Tymber Mission Control](https://help.tymber.io/manage-your-customers)
- If a customer already has an existing profile in your POS and attempts to sign up with the **same email and different phone number.** 
    - They will receive an "Email has already been taken" error upon clicking Sign Up.

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