MI HB4429

Requires device manufacturers, operating system makers, and app stores to estimate users' ages upon device activation and send digital age signals to websites and apps indicating whether users are under 13, 13-15, 16-17, or 18+

Mandates websites and apps with more than 33.33% sexually explicit content to block access entirely when receiving a signal that a user is under 18; sites with less must block access to specific mature content and display disclaimers

Requires app stores to obtain parental consent before allowing users under 16 to download applications and provide parents options to connect with app developers for supervision tools

Prohibits covered manufacturers from using data collected from third parties to compete against them, give preference to their own services, or act in anticompetitive ways

Grants exclusive enforcement authority to the Attorney General with no private right of action; violators receive 45 days to cure violations before facing civil penalties of up to $10,000 per violation