除了Frank的回复.您可以对匿名用户使用Firebase身份验证，因此您可以创建一个当用户访问您的网站并使用它保护存储空间时，透明地显示该信息.

In addition to Frank's reply. You can use Firebase authentication with anonymous user, so you can create one transparently when a user access your web site and secure the storage with it.