Comment: Possibly it might exist in a

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In reply to comment: Good point (see in situ)

Possibly it might exist in a

Possibly it might exist in a free market as a method to cheat on contractual arrangements without being traced. IE two members of a would be cartel, who agreed to monitor each other in their monopolistic ambitions to keep the other from cheating. Which would be a good thing, cartel 'cheaters' are central to free markets, so anything that helps that is good.

But yeah I don't think it would be greatly used.