Are my cards truly random? What is a random number generator?
No human dealer can randomize cards as well as a computer can. Online poker rooms use random number generators to ensure the cards dealt never fall into any predictable pattern. The random number generator uses the same algorithms that power the SSL encryption technology. (SSL is the high security encryption technology used for online credit card and banking transactions.)
To add an extra layer of randomness into the mix, certain websites add additional entropic inputs from the physical world, such as rate of neutron emission from a radioactive substance.