What Is 'Real ID'?

UnRealID.com : What Is 'Real ID'?:

"The REAL ID Act is a national ID card scheme that was passed by Congress back in 2005. It turns drivers licenses into national ID cards. There was no debate whatsoever on REAL ID as it was tacked onto a must-pass appropriations bill to fund the wars in Iraq and Afghanistan.

Since it was passed, sixteen states have passed legislation rejecting REAL ID, making nation-wide implementation next to impossible.
So what, really, is REAL ID?
• A Multi-Billion Dollar Boondoggle.