Writing a mystery-type story, and trying to figure out the clues. I have a possibility, but need to know: how easy is it to get readable fingerprints on normal typing/printing paper? I know from what layman research I’ve been able to find online that it’s harder than one might think to do so, since people’s hands are usually dry and clean. What conditions would need to exist? How much sweat would need to be present to get prints, generally? Is my impression that, all things being equal, that the odds of people leaving fingerprints on paper is better than their odds of doing so, accurate?
Any information that would help me figure out how viable my clue is would be appreciated. Thanks!