There's biases in gambling, such as the 0 on a roulette table, but that is arguably obvious to the player.
Is it legal for online casinos to knowingly or unknowingly bias their games at a software level (random number generator etc) in their favour? Could something like this be covered in the small print?
A problem with RNGs is they all have a bias, we have no perfect system of generating random numbers, but if a bias is detected by the casino, would they legally be required to adjust or change the system they're using?
Specifically I'm interested in the UK and anywhere notable in the US, or if there's somewhere in particular gambling websites set themselves up to avoid these regulations. It would also be interesting to see if the more popular gambling websites worldwide have any common locations.
This seems to cover randomness in the UK, does it apply to card games? (under section Randomness)