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Re:Call of Duty Adds Kernel Level Driver for Anti-Cheat by micromacrofoot on Wednesday October 13, 2021 @01:40PM (#28855094)
Definitely already exists. I've seen external aimbots that monitor what's on screen and input specific keyboard/mouse commands.

Incredibly difficult to detect, you basically need to model the way users behave differently from bots... but at the high end of competitive play people tend to approach more bot-like behaviors.

Re:Call of Duty Adds Kernel Level Driver for Anti-Cheat by bombcar on Wednesday October 13, 2021 @02:05PM (#28855406)
I seem to remember some detection algorithms that worked off "reacting faster than humanly possible" - but of course the bot writers tune for that.