# Consent notice The notice is required by the EU legislation on cookies and other tracking technologies and is also used for informing the user on other GDPR data processing and collecting consent. Before collecting data or processing it, you must let your users know that your app is using such tools and why, as well as give them options to opt out. We are assuming that you already have an API key. If not, please go to our [website](https://www.didomi.io) and sign up for an account. **Topics** * [Customize the notice](/cmp/mobile-sdk/consent-notice/customize-the-notice.md) * [Customize the theme](/cmp/mobile-sdk/consent-notice/customize-the-theme.md) --- # 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://developers.didomi.io/cmp/mobile-sdk/consent-notice.md?ask= ``` 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.