Originally Posted by TisMe

For one thing, it is impossible, as in NOT possible, to know who is at a particular computer. It simply can NOT be done.

I can have all your info, answer any question put to me about you, but that doesn't prove that you are at the computer.

Age verification simply can NOT be accomplished in any way that is even close to foolproof.

Mentioned above how prepaid cards can be bought by anyone of any age, and that MC/Visa forbid the use of their cards or name for age verification purposes.