# Solution Videos

**PathCheck: Privacy-Preserving Crowdsourcing for Citizen Engagement**

{% embed url="<https://youtu.be/yRDc1pxctN8>" %}

**Exposure Notification**

{% embed url="<https://youtu.be/VmzcXNZmft0>" %}

**Case Management with Path Check: Beyond Exposure Alert**

{% embed url="<https://youtu.be/DGTpJTwQlxk>" %}

**Vaccination Credintials**

{% embed url="<https://youtu.be/8yfGrnjcW5g>" %}

**Digital Pandemic Response Demo**

{% embed url="<https://youtu.be/U9FAMw3eUVg>" %}

**GPS Demo**

{% embed url="<https://youtu.be/r3MkAMy2b58>" %}

**Vaccination App**&#x20;

{% embed url="<https://www.dropbox.com/s/kc5acl7xetelonf/90sec_vaccineapp.mp4?dl=0>" %}

{% content-ref url="frequently-asked-questions-faqs" %}
[frequently-asked-questions-faqs](https://prep.pathcheck.org/frequently-asked-questions-faqs)
{% endcontent-ref %}


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# 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://prep.pathcheck.org/solution-videos.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.