Both of these are fine failure modes. And the bulk of people walk on through without manual checks slowing it down.
Anti fraud stuff is more about saving more in losses than it costs to implement. Rather than preventing even a single person from slipping through without paying.
I'm Donald Duck, btw.
You chose the one name that will get you in legal trouble - the IP lawyers will be all over you!
And if it was you would think just make ticketing an option… either digital to prevent ticket sharing or ID check at the service kiosks that are already outside the gates, every time. Doesn’t slow the actual gate line at all.
Corporate america has shown it treats customer information with the highest regard for security and privacy.