[Nachum]

They had a lot more on Atta than merely his wallet. He was positively ID'd in a number of ways. No matter what you say to a conspiracy nut will make no difference. Some nut just went over to Buzz Aldrin and told him he never went to the moon. Same kind of nut, different cheese.

[KayEyeDoubleDee]

Well, my immediate thought was that I was pretty sure that I'd seen footage of him checking in to the flight. But, as you point out, a conspiracy nut would just call that a fake.