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I know there's been a lot of discussion about password strength and indicators when signing up. I often find that when I forget a password for a site, its because I can't remember which set of rules were in place for that site (ie, >10 chars, special chars, no numbers) and if I knew those rules, Id remember which algorithm I used for my password.

To me, it seems like it's worth giving the user a hint about what the password rules were, before forcing them to go through the whole forgot password process. I'm finally able to implement something like this on our site, but I was curious about the UX of it.

mockup

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With that said, has anyone seen this done in practice/know of a reason not too?

Edit 1:

I've often thought the argument against this falls under the vague umbrella of security-- "If we display this information it will be easier to crack the password"-- but I can obtain the same information by attempting to create a new account

marked as duplicate by Code Maverick, Joshua Barron, greenforest, Izhaki, Matt Obee Apr 17 '14 at 9:57

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    Microsoft at least does (sort of)--if you enter a password longer than 16 (which they infuriatingly don't auto-truncate for you) it at least warns "hey enter just the first 16 characters". Unrelated, but don't limit your passwords to 16 characters. – Ben Brocka Apr 16 '14 at 14:32
  • Interesting! That's tangentially what I'm after. If you don't allow special characters, tell me that when I try to enter a password with a special char, instead of just telling me the password is "invalid" – Perchik Apr 16 '14 at 14:37
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  • Well, that settles it. I searched for awhile before posting, but it looks like this is a repeat of that question. Thanks – Perchik Apr 16 '14 at 15:46
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I think this is quite a long shot to expect users to remember their passwords base on the password complexity requirements. I don't think this would be a security issue though, since hackers could just go to the signup page and find out from there what the requirements for passwords are.

On the other hand, I know that when I forget a password it's sometimes because the website has asked for an unusually complex password. In that case I need to change my usual password (bad practice but that's what people do). So when possible, I would try and stick to something that is a standard : min 8 characters, at least one number, at least one letter. But again it might now be sufficient for banking sites, etc.

  • For me, it's much easier to recall the password when I know the rules. Many sites have no requirements on password strength, therefore I'm always surprised that on one specific site I have a stronger password than I would likely use if the restrictions did not exist. – yo' Apr 16 '14 at 20:17

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