Thomas Bass' book The Eudamonic Pie describes a project by some people from UC Santa Cruz who did computer-assisted timing analysis of roulette wheels, and did pretty well at applying it (for a while).

This was in the late 1970s or early 1980s, and hardware has only gotten smaller and more concealable. I'm not surprised at casinos going to digital "wheels", though it sure seems like cheating when there's no possibility of cheating :-)