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A comment on Ask HN: Ideas for offering a free trial without users abusing it?. Parent comment

Re:Ask HN: Ideas for offering a free trial without users abu... by alfarez on Monday June 05, 2023 @06:35AM (#36194556)
Sorry, to be more precise, "same document" could mean the same content but in different formats. OR just slightly tweaked to result in a different hash each time. Harder to abuse for sure, but still has holes.
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Re:Ask HN: Ideas for offering a free trial without users abu... by john_the_writer on Monday June 05, 2023 @07:10AM (#36194772)
Sure.. but at some point you've got a diminished return on efforts to stop users. 99% of abusers won't work around the limits.
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Re:Ask HN: Ideas for offering a free trial without users abu... by throwawayadvsec on Monday June 05, 2023 @08:22AM (#36195243)
use a cheap algo to detect % similarity?
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Re:Ask HN: Ideas for offering a free trial without users abu... by DamonHD on Monday June 05, 2023 @01:59PM (#36200295)
Any sufficiently-determined (and smart enough) user will find a way around any such check; this is just meant to make it a bit harder to do the wrong thing so that some people will stop trying...
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