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A comment on Don’t require a user to be interested twice: lessons on reducing signup friction. Parent comment

Re:Don’t require a user to be interested twice: lessons on r... by mgreenleaf on Wednesday May 13, 2020 @12:58PM (#23168961)
Sometimes it is used as a verification of "uniqueness", since someone could sign up for multiple free trials using different emails. Not a problem for most products, but can be a pain.
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Re:Don’t require a user to be interested twice: lessons on r... by mister_hn on Wednesday May 13, 2020 @04:07PM (#23171227)
In that case, something like electronic ID or webauthn might solve the problem?
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