# Introduction This document provides instructions for software developers who want to create software solutions that include a MagTek Secure Card Reader / Authenticator (SCRA) device connected to a Windows PC, Windows tablet device or Windows Phone mobile device. ### About MTSCRA Library Custom Windows software installed on a host PC can communicate with MagTek SCRA devices via the Audio/Headset Interface, Bluetooth, Bluetooth LE, or USB using the MTSCRA library. The supported platforms for .NET projects include Windows 7, Windows 8/8.1, and Windows 10. The .NET project should contain references to these files: MTSCRANET.dll and MTLIB.dll. For Universal Windows projects, the supported platforms include all Windows 10 devices. The Universal/Windows Store project should contain references to MTSCRAUWP.dll file. --- # 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/card-readers/magnetic-stripe-readers/idynamo-5-gen-iii/documentation/developers-manuals/programmers-manual-.net-pcl/introduction.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.