# O3.22 Ensure linkability, unobservability, and zero-knowledge proofs are the default

{% tabs %}
{% tab title="Principle" %}
[O3: Ensure data privacy by design](/safeguards/universal-dpi-safeguards-framework/principles/operational-principles/o3-ensure-data-privacy-by-design.md)
{% endtab %}

{% tab title="Risk" %}
[RS1 Privacy vulnerability](/safeguards/universal-dpi-safeguards-framework/risks/risks-to-safety.md), [RS2 Digital insecurity](/safeguards/universal-dpi-safeguards-framework/risks/risks-to-safety.md)
{% endtab %}

{% tab title="Lifecycle Stage" %}
[L2: Strategy & Design](/safeguards/universal-dpi-safeguards-framework/life-cycle-stages.md)
{% endtab %}
{% endtabs %}

## Practices

> * Requests for information can be refused, complied with fully, or partially, with zero-knowledge proofs used to verify information without transferring personal data.
> * Design technical systems to protect user interactions from being correlated across different relying parties, unless the user provides their legal identity.
> * Ensure that DPI operators cannot gain knowledge of user behavior or interactions without explicit user consent, using techniques like encryption and anonymization to safeguard privacy.

## Resources

<table data-view="cards"><thead><tr><th></th><th></th><th></th></tr></thead><tbody><tr><td>References</td><td></td><td></td></tr></tbody></table>


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://safedpi.gitbook.io/safeguards/universal-dpi-safeguards-framework/processes/o3.22-ensure-linkability-unobservability-and-zero-knowledge-proofs-are-the-default.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.