Starting Friday, parents can sign their children up for what Michigan officials say is the nation's first registry aimed at keeping spammers from sending children inappropriate e-mail.
The new law bans sending messages to children relating to pornography, illegal or prescription drugs, alcohol, tobacco, gambling, firearms and fireworks.
Signing up for the registry is free, and parents soon will be able to also add their children's instant message IDs, mobile phone numbers, fax numbers and pager numbers to the registry.
Senders must comply with the new law by Aug. 1 or face criminal and civil penalties.
The information will be encrypted to protect it from hackers. To register, parents can go online to www.michigan.gov/protectmichild.