Originally Posted by eamus
"Under CAPPS II, airlines will ask passengers for a slightly expanded amount of reservation information, including full name, date of birth, home address, and home telephone number"
Note that DHS uses the term "will ask for", which is different from "will require".
To clarify it further, as this article explains:
http://www.tennessean.com/apps/pbcs....78&SectionCat=
In a few weeks, the Transportation Security Administration will notify airlines, travel agents and online reservation systems that they will be required to ask travelers for their legal names and birth dates when booking domestic flights.
Travelers will be encouraged, but not required, to give the personal information. Under the current system, only a last name and first initial are needed to reserve a flight.