# Setting: `registration_device_max_accounts`

- **Constant:** `ConfigInterface::REGISTRATION_DEVICE_MAX_ACCOUNTS`
- **Category:** `security`
- **Type:** `number`
- **Required:** yes
- **Sensitive:** no
- **Validation:** `required|integer|min:1|max:10`
- **Placeholder / default hint:** `1`

## Description

Maximum number of accounts allowed per browser/device before registration is blocked (main account is the oldest account seen on that device).

## Allowed options

_Free-form / no fixed options_

## Change via CLI

```bash
featherpanel saas getsetting registration_device_max_accounts
featherpanel saas setsetting registration_device_max_accounts "<value>"
```

## Change via API

```http
PATCH /api/admin/settings
Content-Type: application/json

{ "registration_device_max_accounts": "<value>" }
```