# Assign a unique username

> Understand how to craft a unique account name for each user.

## Vivox account usernames

The first step in logging in to Vivox services is to craft a unique account name for each user who intends to utilize voice or other services. You should use the same account name for the same player every time they play the game. The account name should be unique but also abstracted from any identifiable information. For example, don’t use a user's PlayStation or XBOX name, or real name. The usernames need to be generated by your game server, not assigned by Vivox. This account name will be utilized regularly in subsequent requests to the Vivox servers. For more details about account name syntax and login requests, refer to [Sign in to a game](../developer-guide/client-sdk-basics/sign-in-to-game).

The following are example methods for transmuting and forming usernames:

| Hash&#xA;**Input:**lemmings&#xA;**Output (MD5):**98E1F108B5E78847DEC7FFF9CA486576 | Identifying Code (Example: VIN)&#xA;**Input:**\<game region>, \<game shard>, \<game channel>, \<user number>&#xA;**Output:**030104\_16\<game region>\<game shard>\<game channel>\_\<user number> |
| --------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| Results:&#xA;.issuer-ba63.98E1F108B5E78847DEC7FFF9CA486576.                       | Results:&#xA;.issuer-ba63.030104\_16.                                                                                                                                                            |

> **Note:**
>
> Vivox responds with the account name sent to it, your client or server will need to map the abstracted username back to the original user.

Next step is to [generate a login access token](./core-login-token.md).