Belated edit: It was thoughtless to say this: > And if they were careless, that would be great. It's difficult to say anything general, given how widely stand

Belated edit: It was thoughtless to say this: > And if they were careless, that would be great. It's difficult to say anything general, given how widely standards vary. I was originally going to say that the system would guarantee anonymity. And that's really the only workable option, because otherwise you've built in a vulnerability.