[Iceman]

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I agree that it can get closer but I still think that these machines would have a detectable pattern in the way they shuffle. This could just be due to my ignorance about the way these machines work but I just think that someone that had access to one of these machines and had the right skill set could probably find some way to beat it.

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A poorly designed shuffling machine would definitely be beatable, but it wouldn't be difficult for a manufacturer to include enough randomizing factors to make it completely untrackable in practice. For example, you could use a 32-bit random number to decide how high in the deck to start the first shuffle, or have two different four-deck shoes and deal one round from one while the other shuffles continuously, then switch.