It is an entire class of people, I would never come close to thinking it is simply Bush himself..

On the Real ID Act, I think everyone should agree the entry in Wikipedia is correct, except certain information is missing. A 5 second search on google I found this article:

FAQ: How Real ID will affect you | CNET News.com
What's going to be stored on this ID card?
At a minimum: name, birth date, sex, ID number, a digital photograph, address, and a "common machine-readable technology" that Homeland Security will decide on. The card must also sport "physical security features designed to prevent tampering, counterfeiting, or duplication of the document for fraudulent purposes."

Homeland Security is permitted to add additional requirements--such as a fingerprint or retinal scan--on top of those. We won't know for a while what these additional requirements will be.