I think there are a lot of people gambling under the legal age. I believe that it's going to be hard to control that access online gambling sites just because when using bitcoin as the currency, there are no verifications needed.
yes there is no doubt about that fact that there are a lot teenagers who are playing gambling and specially though online gambling, where they do not have any restriction, so the number of teenage gambler will be more in online world. I think it is more important that the government should take a very serious step to stop them form playing gambling online, because it is effective their future too much.