Originally Posted by HeadInTheClouds
Gee, if I want to overstay my visa and have the INS think I departed, how hard would it be to travel on a domestic flight and just "depart" via the kiosk since they're all in common terminal areas?

Once the program is up and running, the receipt it spits out will be collected at boarding time and attached to your outgoing BP (like the current I94 stubs)