If you sell the copyright, does that mean you can no longer look like yourself?

Non exclusive license? This might be useful to actors if someone generates video of them too.

I'd imagine a ban would be on their service, not the model itself.

My guess it had happened a few times in the past and had always been "glitches" or passenger doing something silly which also gets blamed as a "glitch".

1) Give the ticket to the first person in the check point, get scaned, talk to the their children that is makin fuzz, give the ticket to the second person in the check point, alarm, nobody remember that they gave the ticket to the first person because everyone was in autopilot.

2) Give the ticket to the first person in the check point, get scaned, notice that the partner went to the bathroom, wait, give the ticket again to the first person in the check point, alarm, nobody remember that they gave the ticket to the first person because everyone was in autopilot.

I bet passengers do this often enough.

You're traveling as a family. You print boarding passes and distribute them to everybody. Somebody loses theirs. So you print new copies, but you don't necessarily give people the same seat number as the first time.

When boarding the plane, one of you reaches into their bag and grabs the one they thought they had lost. So two of your family members are using the same pass, and one is going unused.

No harm is caused because the number of passengers on the plane is still as expected, and the family is able to figure out for themselves who takes which seat.

I was just recently traveling with someone and they had a copy of both of our boarding passes (I just had mine). I boarded first and heard behind me some issue happening: they'd accidentally given my pass so it popped up as already boarded. They just switched to the right pass and there was no issue. It would have been a little more complicated if we had just happened to board in the opposite order, though.

So, I'm sure the general issue of "this pass was used already" happens a lot. How often it gets resolved without the would-be passenger presenting a "good" one, who knows.

... or the stowaway has found an empty seat (not likely nowadays).

I'd be perfectly fine with visiting the site to get the image if there weren't tons of blog/twitter type sites where it links to the frontpage and you have to dig through years of posts to find the image you're after.

For the XY problem I kind of think it's fine to just help them with Y and let them discover Y wasn't an appropriate solution to X themselves. They might need help again with X, but they'll probably learn more from doing Y and discovering why Y was wrong themselves.

If you're open to suggestions I think using rfc1149 would be more efficient than the bottles.

Haha! Excellent, I had no idea there is an RFC for that!