Analyzing the HDMI is definetely not an up-to-date hacking technique by any means. Besides having to rely on real-time computer vision which is more expensive/

Analyzing the HDMI is definetely not an up-to-date hacking technique by any means. Besides having to rely on real-time computer vision which is more expensive/resource consuming and harder, the results wouldn't be as good as with other techniques (although this might fit your argument of having some misses and jitter/lag/etc... to act as cover).