Excerpt from:
https://www.magtek.com/content/documentationfiles/d998200076.pdf
(Chapter 1, 'Overview MagTek Reader Configuration Program for Windows ClickOnce ')
"The MagTek Reader Configuration Program is a suite of applications running on a variety of operating systems, and is designed to leverage the MagTek RS2 web services, for secure key injection and device configuration of MagneSafe readers.
By running the MagTek Reader Configuration Program ClickOnce app, the user can configure their device and load keys in a secure environment. ClickOnce is a Microsoft technology that enables the user to install and run a Windows-based smart client application by clicking a link in a web page.
ClickOnce is a component of Microsoft .NET Framework 2.0 and later, and supports deploying applications made with Windows Forms or Windows Presentation Foundation "
Additional information is available by visiting: https://www.magtek.com/support/remote-services