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I had one some years ago: a friends mother had signed up with a password she could remember - her daughter's first pet, a cat called "PEPSI". And this worked for ages, until the company was bought out by one with more restrictive passwords. When she replaced the computer, she couldn't sign in to her email any more because the password was wrong. And she couldn't change it because they required her old password to set a new one and that wasn't valid under their new rules ... It took some long drawn out phone conversations to sort that one out.
"I have no idea what I did, but I'm taking full credit for it." - ThisOldTony
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I would be annoyed to have such a limitation. Passwords shouldn't be stored in clear text in the first place anyway, but rather salted and hashed, so I don't see any reason to limit the character set (except maybe for control characters).
"Five fruits and vegetables a day? What a joke!
Personally, after the third watermelon, I'm full."
My ISP gives you an IP address with a password (which YOU can change). When you point your browser to the IP address, You enter a page where you can configure many of the router parameters. (Dangerous in some hands! ) You have full control of the router and WiFi passwords. Nice (for me, at least.)
Mine does the same, except the router apparently runs past their software as well. I actually tried to log into my router to change the password myself. My error message was "Cannot connect to the internet!"
So I couldn't connect to the internet and I couldn't change the password so I could connect to the internet.
Passwords should be hashed so who cares about the characters? I would allow only printable ASCII though because those are universal and won't create problems in case of bad / strange keyboard configuration.
Still a lot of characters for passwords.
GCS d--(d+) s-/++ a C++++ U+++ P- L+@ E-- W++ N+ o+ K- w+++ O? M-- V? PS+ PE- Y+ PGP t+ 5? X R+++ tv-- b+(+++) DI+++ D++ G e++ h--- r+++ y+++* Weapons extension: ma- k++ F+2 X
On a site I needed to register an account, they had a restriction for password to be at least 8 characters. Full stop.
I entered a password of 14 characters and got an error message: password too short.
After a uselessly long effort to get past the %#$%#&%#&# smart menu on the phone where none of the options addressed my issue, I eventually got to a(n alleged) human.
I had entered a password with upper, lower, numeric, and special characters.
Turns out only characters that appear on a phone are allowed.
It would seem the der who wrote the (regex?) validation only returned one error response to me - password too short