In online casinos, shuffling machines are typically computer algorithms that are used to shuffle the virtual deck of cards.

house edge of blackjack.
Blackjack table

These algorithms ensure that the shuffle is random and fair, so that each hand dealt is unique and the player has a random chance of winning.

Shuffling
Shuffling

The exact method of shuffling used by an online casino can vary, but common methods include:

1. Pseudorandom number generator (PRNG)

A PRNG is a mathematical algorithm that uses a seed number to generate a sequence of random numbers. In online blackjack, a PRNG could be used to shuffle the virtual deck of cards.

How does a Pseudorandom number generator (PRNG) work?

A pseudorandom number generator (PRNG) is a computer algorithm that generates a sequence of numbers that are statistically indistinguishable from a random sequence.

The numbers generated by a PRNG are deterministic, meaning that if you start with the same seed value, the same sequence of numbers will be generated each time.

Pseudorandom number generator (PRNG)
Pseudorandom number generator (PRNG)

PRNGs work by using a mathematical formula to transform a starting seed value into a sequence of numbers.

The seed value is usually generated from a source of randomness, such as the current time or the contents of a file, to ensure that the sequence of numbers generated is truly random.

Once the seed value has been established, the PRNG uses a mathematical formula to generate a sequence of numbers that are statistically random.

The sequence of numbers generated by a PRNG can be used in a variety of applications, such as simulations, cryptography, or generating random numbers for games like blackjack.

In online blackjack, a PRNG can be used to shuffle the virtual deck of cards, ensuring that the shuffle is random and fair and that each hand dealt is unique.

The use of a PRNG eliminates the need for physical cards and ensures that the game is played in a fair and transparent manner.

Here you can read how to build a Pseudorandom number generator (PRNG).

2. Shuffling algorithms

Some online casinos may use specific algorithms to shuffle the virtual deck of cards in a way that ensures randomness and fairness.

These algorithms can be based on a variety of mathematical concepts, such as permutations, random walks, or Markov chains.

In general, online casinos use a combination of these methods to ensure that the virtual deck of cards is shuffled fairly and randomly, giving each player an equal chance of winning.

The use of shuffling machines in online blackjack eliminates the need for physical cards and ensures that the game is played in a fair and transparent manner.

What is permutations, random walks, or Markov chains?

Permutations
A permutation is an arrangement of objects in a specific order. In mathematics, the study of permutations deals with counting the number of ways to arrange a set of objects in a specific order.

Permutations can be used to model a variety of real-world problems, such as scheduling appointments or arranging a deck of cards.

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Random walks
A random walk is a mathematical concept that describes a sequence of steps in which each step is chosen randomly from a set of possible steps.

Random walks can be used to model a variety of real-world problems, such as the movement of a stock price over time or the behavior of a random surfer on the internet.

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Markov chains
A Markov chain is a mathematical model that describes a system that changes over time, where the probability of each future state depends only on the current state and not on any past states.

Markov chains can be used to model a variety of real-world problems, such as weather patterns or the behavior of a financial market.

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Summary

In online blackjack, these mathematical concepts can be used to create shuffling algorithms that ensure that the virtual deck of cards is shuffled randomly and fairly, giving each player an equal chance of winning.

Are these shuffling systems safe?

PRNGs and other systems used in online blackjack are designed to ensure that the game is fair and transparent, but there is no guarantee that they will always provide completely secure and tamper-proof gameplay.

While these systems use mathematical algorithms to ensure that the outcome of each game is random, there is always the possibility of bugs or vulnerabilities in the code that could be exploited by malicious actors.

Additionally, some online casinos may not use high-quality PRNGs or may not implement them correctly, which could also lead to fairness issues.

To ensure that you are playing in a fair and secure online blackjack game, it is important to research the casino and the software they use before you start playing.

FAQ

How many decks do online casinos use in card games?

The vast majority use 8 decks for all card games.

Is it possible to count cards in Blackjack when casinos use 8 decks?

Yes, it is still possible to count cards even if the casino uses 8 card decks.

Source: https://newzealandcasinos.nz/card-shuffling-machines-online/