[ace2358]

I think the have a pci-e card on the computer playing the game. The card sends hardware level debugging information (memory dma) to another computer.

This second computer is connected to the first computer by usb, to spoof a HID (mouse, keyboard, controller etc). It reads the data from the pci card on the first computer and sends inputs via usb.

Done right, and it can’t be detected via software. Behaviour analysis still works for aim hacks.

Now days I think there are even devices that will tap the hdmi stream and use the video data to calculate inputs and the send the input via usb/hid/controller. This works on console I think!