Editing 2700: Account Problems
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** The password system accepts Unicode characters at first, but is later changed to only accept ASCII passwords. Users who included non-ASCII characters like é or ö in their password become locked out of their account because they are no longer allowed to submit those characters. | ** The password system accepts Unicode characters at first, but is later changed to only accept ASCII passwords. Users who included non-ASCII characters like é or ö in their password become locked out of their account because they are no longer allowed to submit those characters. | ||
** Passwords containing non-ASCII characters are in general problematic, because it might not be possible to type them on the keyboard used for logging in. For example, on Mac OS a logged-in user can change their password to one that contains emojis, but the keyboard on the login screen does not have good support for typing emojis.[https://medium.com/@hvost/why-you-should-not-use-emojis-in-your-passwords-b8db0607e169][https://apple.stackexchange.com/questions/202143/i-included-emoji-in-my-password-and-now-i-cant-log-in-to-my-account-on-yosemite]. | ** Passwords containing non-ASCII characters are in general problematic, because it might not be possible to type them on the keyboard used for logging in. For example, on Mac OS a logged-in user can change their password to one that contains emojis, but the keyboard on the login screen does not have good support for typing emojis.[https://medium.com/@hvost/why-you-should-not-use-emojis-in-your-passwords-b8db0607e169][https://apple.stackexchange.com/questions/202143/i-included-emoji-in-my-password-and-now-i-cant-log-in-to-my-account-on-yosemite]. | ||
− | ** | + | ** If, in the context of a business network, multiple systems with different password handling were set by the same central program that allows characters that some systems allow, but others don't |
* There are several techniques that can be used to safely handle passwords and other user inputs that might contain unsafe characters such as the null character: | * There are several techniques that can be used to safely handle passwords and other user inputs that might contain unsafe characters such as the null character: |