I usually figure out the film code on used holders containing film, which happens all the time!
Well as I said it's more about helping ilford and making a "cool" image for posting online then for identification, and I'm getting better at remembering the codes. But to a novice it's a deterrent, and forget that old mentality of "if you can't make it, don't bother" with that attitude not enough new blood will make it to film.
~Stone | "...of course, that's just my opinion. I could be wrong."~Dennis Miller