Apple update turns Czech mate for locked-out iPhone user

“A 21-yr-old university student in the US is in data limbo after #Apple removed a character from its #Czech keyboard, preventing him from entering his #iPhone passcode.”

https://www.theregister.com/2026/04/12/ios_passcode_bug/

Apple update looks like Czech mate for locked-out iPhone user

: Lock-screen keyboard no longer accepts háček in student's alphanumeric passcode

The Register

@AnnaAnthro I'm a native Czech speaker, and I've seen so many strange issues when using accented characters (ú,ů,ý,ž,ř,č,ó, etc.) in passwords. The worst kind is when the service says that my password was changed successfully, then I go to try and login, and get errors because the password hashing process made some changes to the password because of the accented characters, and I have to reset it.

Some services also silently truncate passwords over 56 and 72 characters.

@prusa I actually find the ethno-linguistics around passwords really interesting.

English-speakers apparently use phrases more frequently, ie ThisIsMyPassword. While Mandarin-speakers tend to use number puns or their telephone numbers.

This is article from 2019 but you might find it interesting

https://spectrum.ieee.org/how-language-shapes-chinese-and-english-password-security

How Language Shapes Password Security

Differences between Chinese- and English-language passwords have big security implications for popular Web services

IEEE Spectrum
@AnnaAnthro That is really interesting, I definitely have a different process for choosing passwords in different languages, and never even thought about something like this.