I go by my middle name. It's the only given name on all my credit cards and FT memberships except for United Airlines, which insisted a couple of years ago that they use my first name (accordingly I don't use their luggage tags, which have the "wrong" name). I'm enrolled in TSA Pre with UA and AA. UA uses my first name and AA my middle name. No problem at the checkpoints with either one, since all three names are on my driver's license.

So now I'm contemplating Global Entry. Registering for GOES I put both my first and middle names in the First Name field, separated by a space, and it took. I have yet to complete the Global Entry application since I have to find my US Naturalization Certificate, but when I apply and enter legal document information, I will have to list my middle name in its legal place.

I assume my Global Entry card will also list all three names, which is fine, but I'm concerned that additional airlines will then require me to list my first name on FT accounts, ticket purchases etc. Is that fear well-founded? Any other thoughts on this crisis of identity?