[henadzit]

It would also help if tickets had a "No photography" icon on them and a note about them having private information.

[Natanael_L]

I think somebody should develop a standardized and open auto redaction flagging scheme for anything printed, where cameras and any software meant to share photos can offer the user to redact every sensitive field in a secure manner.

Something like a Qr code saying "this stuff in that position relative to this code is sensitive", giving the user a prompt saying "this was redacted; undo?"

[YokoZar]

And then camera-shy people will print it on their clothes.

[Natanael_L]

That's a feature

[Doxin]

Maybe something similar to the EURion constellation[0]?

[0] https://en.wikipedia.org/wiki/EURion_constellation

[flyGuyOnTheSly]

With people taking pictures of their breakfast and posting it to Instagram these days... that's a great idea.