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A comment on Ask HN: Better to have optional signups or force signups/logins?. Parent comment

Re:Ask HN: Better to have optional signups or force signups/... by starshadowx2 on Monday May 25, 2015 @09:17PM (#9602453)
That's pretty much what I was thinking. The discovery part of the app would be open but the profile based things would of course need a login.

What ways can you uniquely identify users who aren't logged in?

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Re:Ask HN: Better to have optional signups or force signups/... by meesterdude on Monday May 25, 2015 @09:30PM (#9602495)
browsers are surprisingly unique to each user; see "browser fingerprinting" https://panopticlick.eff.org/

You could also just use cookies, which is perhaps a more socially conscious way of handing it.

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Re:Ask HN: Better to have optional signups or force signups/... by Lan on Tuesday May 26, 2015 @11:42AM (#9605516)
Browser fingerprinting fails for cases where a computer is shared. That includes both home and public terminals. Not to mention it creeps people out and lacks any type of security.
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