The TetherScript Virtual HID Driver Kit consists of a set of software components that work together to create a virtual HID. The kit includes:

Unlike standard software-level automation scripts that simply inject windows messages, TetherScript installs a true, digitally signed kernel-mode driver. To the Windows operating system, the virtual devices created by TetherScript are completely indistinguishable from physical USB hardware plugged into a motherboard. Why TetherScript is Considered the Best in Class

To reliably emulate a keyboard, mouse, or joystick, you need to create a virtual device that sits inside Device Manager. Windows treats this driver exactly like a physical USB keyboard. The Tetherscript Virtual HID Driver Kit provides the framework to do this without writing complex kernel-mode code from scratch.

This code will work on a locked Windows login screen (if the session is selected) or inside a game that blocks traditional automation. No administrator privileges are required for the runtime (only during driver installation).

Before its discontinuation, the kit was highly regarded for: Ease of Use