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There's a classic book from 1985 about an early, successful attempt to make one. https://en.wikipedia.org/wiki/The_Eudaemonic_Pie https://en.wikipedia.org/wiki

• vmh1928 6mo ago
  Also see: https://en.wikipedia.org/wiki/Eudaemons https://en.wikipedia.org/wiki/Eudaemons The Eudaemons were a small group headed by graduate physics students J. Doyne Farmer and Norman Packard at the University of California Santa Cruz in the late 1970s.[1] The group's immediate objective was to find a way to beat roulette using a concealed computer, with the ulterior motive of using the money made from roulette to fund a scientific community. The name of the group was inspired by the eudaimonism philosophy. .... As a science experiment, the group's objective was accomplished: to prove that there was a way of predicting where a ball would fall in a roulette wheel given input data about the timing of the passage of the ball relative to the wheel. A previous wearable roulette computer had been built and used in a casino by Edward O. Thorp and Claude Shannon in 1960–1961, though it had only been used briefly.[2][3]