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by Robin_Message 5682 days ago
Actually swirls are very reversible - http://news.bbc.co.uk/1/hi/7384834.stm (Paedophile caught from video with swirled obfuscation of his face.)

You're definitely right about adding entropy though, but why bother? Just blacking it out guarantees how much information is available - zero.

1 comments

That's not a random swirl. Interesting though