Is the "Breaking Vegas" blackjack stuff real?

[Basil-H]

In Ben Mezrich's "Breaking Vegas" he goes on about three different techniques for beating the casinos at blackjack... are these real and do they work or are they just made up to make the story sound better?

[Gus Mango Fish]

In Ben Mezrich's "Breaking Vegas" he goes on about three different techniques for beating the casinos at blackjack... are these real and do they work or are they just made up to make the story sound better?

I've not read the book, though did read 'Bringing Down the House' by the same author - and that is a true story.

What are the three methods called?

card-counting, shuffle tracking. etc?