Some (most) details from recent years are subject to NDAs of various sorts - the rough areas are in some computer vision projects for automated IoT/mobile device testing, runtime "VJ-ing" with watermark injection/removal and embedded device forensics.

'Desktop/display server' parts is just a sidetrack that I do to get about as far away from what is otherwise happening in that space as possible, I need a sane work environment that doesn't keep making decisions behind my back or is laughably unreliable, and this turned out to be the easiest, albeit time-consuming, route.