In PS, the shuffle highlights are:
A deck of 52 cards can be shuffled in 52! ways. 52! is about 2^225 (to be precise, 80,658,175,170,943,878,571,660,636,856,404,000,000 ,000,000,000,000,000,000,000, 000,000,000 ways). We use 249 random bits from both entropy sources (user input and quantum randomness) to achieve an even and unpredictable statistical distribution.
If you play online poker game make sure that random number generators (RNG) are used to ensure total game integrity.