Continuous Shuffle Machines can they be beaten?

[seriousplayer]

I'm not BS'ing. I'm also speaking rather abstractly.

I'm reasonably confident this is the case when you're building any play against a shuffle.

That said, I've never seen a random shuffle. I've heard (and believe) that if you have a good source of randomness, a Fisher-Yates shuffle can be truly random, in ways others cannot. Some of the newer "elevator" shufflers may be there - I think the PRNG in the newer models is significantly different than in some of the older models.

The basis for most plays against a shuffle is that some cards aren't fully mixed, so you have some knowledge of conditions when playing against a certain position in the deck.

My questions - are all the cards fully mixed? If not, which cards aren't? Is there a way to know when that group of cards is being dealt? Is there anything you can infer about that group of cards, based on other information?

Beside theoretical and conceptual ideas that CSM blackjack games are beatable. Have you actually did the implementation and beat the CSM game in real casino play?