I am not sure if this is the right place to ask this question and if I am wrong please guide me to correct forums.
I am a software developer and I was working on the idea of automated flight check-in. My question is, can I do a flight check-in on behalf of someone else if that someone has given me consent regarding it.
Whenever you check-in, you agree to terms and conditions of an airline that you'll not being any illegal items to the flight, so I can my automated software agree to those terms and conditions on user's behalf? This website http://passnfly.com/ is doing the same stuff, I don't know if they have acquired any special permission or not.