Best Buy already does this... (Score 1)

As an ex-employee of Best Buy (who worked for them for over 2 and a half years) I know that our company policy was always to check the ID of anyone attemting to purchase an "M" rated game. If the person was not 18years old or older, we refused the sale of that video game. Even though this isn't really yet a law, Best Buy put this policy in place early to make sure that sanctions would not be placed against them if this ever did become a law. I guess it looks like planning for the future may pay off for Best Buy in the long run.