Where is the federalism?
Q: What kind of data will states share under Real ID?
Real ID will require states to share detailed information about anyone with a state ID card or driver's license, perhaps through a network called AAMVAnet, which the Department of Transportation is paying to expand in hopes of supporting the massive amount of data that will be exchanged. Databases owned by Social Security and U.S. Citizenship and Immigration Services will also be integrated. (emphasis mine) The idea is that this will allow documents such as birth certificates to be validated online.
Many of the details remain unclear because Homeland Security has not made final decisions, including about whether to build on top of AAMVAnet or expand a centralized federal database already used for commercial driver's licensing. Computer scientists and privacy advocates unsuccessfully urged Homeland Security to reject Real ID as "unworkable" because of the security and scalability concerns.
Read more here.