通过两步验证确保账户安全
两步验证（也称为双重验证或多重验证）提供更安全的登录过程。当您本人以外的任何人尝试使用您的账户登录您的 Shopify 后台时，两步验证可提供额外的安全性。尝试登录时，您需要完成两个单独步骤：
输入您的账户凭据，即您的邮箱和密码。
使用移动设备或安全密钥对登录尝试进行验证。
两步验证使未经授权的人员更难以访问您的账户。即使其他人知道您的密码，他们也无法在不进行两步验证的情况下登录。
安全的两步验证依靠两类要素的组合，这可以是您知道的内容（例如您的邮箱和密码组合）、您拥有的东西（例如由验证应用提供或通过短信提供的一次性代码，或安全密钥），或者是您自身的特征（生物识别验证，例如指纹）。
例如，当您在银行提取现金时，您需要用到已有的一些东西（您的借记卡）以及您知道的一些内容（您的 PIN）。两步验证与此相似，只不过每次登录 Shopify 账户时，您还需要使用验证方法（例如一次性代码）。而一次性代码会在使用后过期，并且无法再次使用。
所有员工账户均可设置两步验证，但是店主无法为员工激活验证方法。员工需要为自己的账户设置两步验证。
Shopify商户官网原文详情：
Secure your account with two-step authentication
Two-step authentication (also known as two-factor authentication or multifactor authentication) provides a more secure login process. Two-step authentication provides extra security in case anyone other than you attempts to log in to your Shopify admin using your account. When you attempt to log in, you need to complete two separate steps:
Enter your account credentials, which are your email address and your password.
Authenticate your attempt to log in using a mobile device or a security key.
Two-step authentication makes it much more difficult for an unauthorized person to access your account. Even if someone else learns your password, they won't be able to log in without the second step.
Secure two-step authentication relies on combining two factors, which can be something you know (such as your email address and password combination), something you have (such as a one-time use code that is provided by an authentication app or through SMS text, or a security key), or something you are (biometric authentication, such as a fingerprint).
For example, when you make a cash withdrawal at the bank, you need something you have (your debit card) and something you know (your PIN). Two-factor authentication is similar, but you also need to use an authentication method, such as a one-time use code, every time that you log in to your Shopify account. In the case of a one-time use code, the code expires after it's used and it can't be used again.
Two-step authentication can be set up for all staff accounts, but the store owner can't activate it for staff. Staff need to set up two-step authentication for their own accounts.
文章内容来源：Shopify商户官方网站
