使用 USB 安全密钥进行两步验证
启用两步验证的另一种选择是购买 USB 安全密钥。将 USB 安全密钥插入电脑上的可用 USB 端口，然后和身份验证器程序配合工作生成代码，用以登录您的卖家账户。
USB 安全密钥包括 Yubikeys 和 Nitrokeys，您也可以在互联网上搜索其他密钥。请确保它们都支持 TOTP-OATH（开放式身份验证计划采用的基于时间的一次性密码算法）。
USB 安全密钥设置
在您安装了配合 USB 安全密钥使用的身份验证器程序后，请执行以下步骤。
1、在卖家平台中，前往【设置】，然后选择【登录设置】。
2、在【登录和安全】页面上，选择【两步验证 (2SV) 设置】选项旁边的【编辑】。
3、在【高级安全设置】页面，选择【开始】。
4、页面提示您选择接收验证码的方式时，请选中【认证器应用程序】。此时屏幕上将显示一个二维码。
5、将您的 USB 安全密钥插入到电脑的 USB 驱动器中。
6、按照身份验证器程序的说明添加账户名称（电子邮件地址）和二维码中嵌入的密钥。有些系统能够扫描二维码，而有些可能需要您手动输入密钥。如果您无法扫描代码，请点击两步验证设置页面上的【无法扫描条形码？】。
7、在向身份验证器程序添加凭证后，该程序将自动生成随机代码，以便您在设置屏幕的二维码下重新输入。
8、点击【确认并继续】。
当您将 USB 安全密钥插入电脑时，系统将向身份验证器程序发送一个代码。您将在登录屏幕上输入此代码。仅当您插入 USB 安全密钥时，身份验证器程序才会生成代码。
Use a USB security key for Two-Step Verification
Another option for enabling Two-Step Verification is to purchase a USB security key. These are plugged into an available USB port on your computer, and work with an authenticator program to generate codes for logging in to your seller account.
Some examples of USB security keys include Yubikeys and Nitrokeys, but you can search for others on the Internet. Make sure they all support TOTP-OATH (Time-based One-time Password Algorithm for the Initiative for Open Authentication).
Note: USB security keys and authenticator programs don't have access to your Seller Central password or account information.
USB security key setup
Follow these steps after you have installed the authenticator program that comes with your USB security key.
1、In Seller Central, go to Settings and select Login Settings.
2、On the Login & security page, select Edit next to the Two-Step Verification (2SV) Settings option.
3、On the Advanced Security Settings page, select Get Started.
4、Check Authenticator App when prompted to choose how you'll receive codes. A QR code will display on the screen.
5、Insert your USB security key into the USB drive on your computer.
6、Follow the instructions of your authenticator program to add your account name (email address) and the secret key, which is embedded in the QR code. Some have the capability to scan QR codes while others might require you to enter the secret key manually. If you can't scan the code, click Can’t scan the barcode? on the Two-Step Verification setup page.
7、After you add credentials to the authenticator program, it will automatically generate a random code for you to re-enter on the setup screen under the QR code.
8、Click Verify and continue.
When you insert the USB security key into your computer, a code will be sent to the authenticator program. You'll enter that code on the login screen. The authenticator program will not generate codes until you insert the USB security key.
