There were primarily two mechanisms for activating this specific edition:
However, I can provide a comprehensive guide on the legitimate ways to acquire and activate this specific operating system, along with some technical context regarding the "Embedded" editions.
Windows 8.1 Embedded Industry Pro is a specialized version of Windows designed for enterprise devices like ATMs, point-of-sale (POS) systems, and kiosks. Unlike standard retail versions of Windows, the licensing and activation model for Embedded systems is different.
Windows 8.1 Embedded Industry Pro is a specialized edition of Windows 8.1 designed for industrial devices, ATMs, kiosks, point-of-sale (POS) systems, medical equipment, and other embedded scenarios requiring a locked-down, long-term servicing solution. Unlike the mainstream Consumer or Pro editions, it includes features like write filters (UWF), gesture filters, keyboard filters, and custom shell launchers.