I dont realy know, if it would be technicaly possible, but i think if, it would be difficult to do.
If you allready know where/ how fast your subject is moving, which you want to track, it would most likely be easier to track it with some kind of fluid head (used for Video-Cameras) or some kind of motion control rig.
If your motion is realy that kind of fast, that moving your camera is no longer practical, you could use a Rotating Miror, which could also be motion controled.
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Just a sidenote to this:
I never seen any feature like this (maybe there is, but i never seen something alike), even in way more expensive and professional cameras than the chronos. So i think, if it would be possible to do it would have been done bevore by someone...
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Maybe someone of the Krontech Team can give a more educated opinion about this, if it would be technicaly possible or practical to have digital Tracking in camera.