4-8 digits is fine and what Olga, Michael and I discussed several weeks ago.
-- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to unity8 in Ubuntu. https://bugs.launchpad.net/bugs/1363214 Title: [System Settings] [design] allow Passcodes of variable length instead of just 4 digits Status in Ubuntu UX bugs: In Progress Status in “ubuntu-system-settings” package in Ubuntu: Confirmed Status in “unity8” package in Ubuntu: Confirmed Bug description: Currently when setting a Passcode on the device, it must be 4 digits. This is artificially limiting. Other platforms (eg Android) allow longer Passcodes. It has always been my understanding that we should support Swipe, Passphrase and Passcode where Passphrase and Passcode can be arbitrarily long. However, once longer Passcodes are supported, we will have to add an Enter key. Right now, the lockscreen checks the Passcode once 4 digits are added so that you don't have to press Enter. I guess this was done for usability, but would be a security issue because an attacker can easily determine the Passcode length, which makes it easier to for an attacker to guess the Passcode. Eg, if I have a 5 digit Passcode set, then an attacker need only type '11111' and know that the Passcode is only five characters. Now, a Passcode isn't strong to begin with and an automated attack could rather quickly brute force Passcodes, but we shouldn't make it easier for someone manually trying to guess the Passcode. The passphrase lockscreen prompt correctly allows variable length passphrases and requires you to press Enter. I suggest moving the 'X' up t the left of '0' and an Enter symbol to the rigth of '0'. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-ux/+bug/1363214/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
