Randomness and shuffling
Computers cannot generate true random numbers (at least without special hardware). Instead they generate pseudo random numbers using mathematical formulae which produce sequences of numbers that appear random
Modern algorithms are so good that the numbers look exactly like there were really random. The pseudo random number generator (PRNG) used in this game is one of them. But there are players who complain the PRNG is not good.
UBJR has an answer to their complains:

TRUE RANDOM NUMBER GENERATOR (TRNG) !

The numbers are generated via atmospheric noise. For more info please visit Random.org. You must have an internet connection because the numbers are generated by this site and downloaded into the game.
To turn this option on/off go to "Settings/Dealer --> True random generator". If TRNG is on, there will be a small dot displayed on the shoe. If the dot is green, the deck was shuffled with TRNG. If the dot is red, there was some problems using TRNG so RNG was used instead.