You can either develop each policy type individually or combine all three policy types - resource, user, data request - into one threshold policy.

您可以分别开发每个策略类型，或者将三个策略类型—资源、用户、数据请求—结合为一个阀值策略。

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Data changes made during every user request would need to be saved.

每个用户请求期间所做的数据变更都要被保存。

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To access private data, the application must request and the user must grant to the application permissions to do so.

要访问私有数据，应用程序必须请求权限，并由用户对应用程序授予权限，才能进行访问。

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For sensitive data such as telephone numbers, postal and e-mail addresses, social security numbers or financial data, a site would have to explicitly request a user's permission to track and store the information.

FORBES: Online Advertising