Found in 1 comment on Hacker News
tehwalrus · 2013-10-29 · Original thread
Many people will cheat until they think someone can see them, and then stop[1]. By just reminding people that someone is watching, you'll vastly increase the proportion of people who pay.

I think this is the best way to combat hidden "just data-copying" computer crimes - because people think they can't be seen while doing them, they just need to be shown that someone can see and they'll stop. (This should work on all but the small fraction of people who will steal whatever you do - again, see [1]!)

[1] "The honest truth about dishonesty", Dan Ariely

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