# Get App Certificate Fingerprint

Gets the app signing certificate SHA256 fingerprint.

Action available for the following operating systems:

![](/files/-MRyMmurYkr5sJQek1Ij)

### Parameters

* **Target** - Control or variable to save the fingerprint.

{% hint style="info" %}
If more than one certificate is found, the fingerprints will be separated by CR.
{% endhint %}

{% hint style="info" %}
This is useful to check if the APK was recompiled and resigned with a different signature.
{% endhint %}


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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://doc.sysdevmobile.com/kalipso5/developing/form/actions/actions-description/group-others/get-app-certificate-fingerprint.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.