# Overview

This document is intended to be used with the MagTek Reader Management System Windows Application.

#### RMS Windows <a href="#rms_windows" id="rms_windows"></a>

* Windows Application (PN 1000009734)
* For use with DynaPro Go and oDynamo devices.

### Purpose <a href="#id-1.1_purpose" id="id-1.1_purpose"></a>

This document provides instructions for updating the Certificate Authority Public Keys (CAPKs) securely stored in DynaPro Go and oDynamo devices. CAPKs are used in EMV (Europay, Mastercard, and Visa) payment systems to verify the authenticity of card transactions. Each CAPK is associated with a specific issuing bank or payment network and has an expiration date, after which it must be updated in the device.


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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://developer.magtek.com/hardware/oem-readers-and-components/oem-readers/odynamo/documentation/user-manuals/emv-tag-and-capk-update-instructions/overview.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.