On 2/22/11, after 10 previous trips, I got the big "X" after trying to use the GE terminal at JFK T8 (AA). I questioned the agent and he thought it might have something to with my fingerprints (I think one of my fingers was not completely on the glass). After answering the several questions {all NO}, the terminal spit out my slip with the "X"--this time it did NOT ask me to verify my flight.
Hoping that this won't happen again, have others experienced similar problems (re fingerprints)?
Could one make a second attempt?