This bug report is confusing two issues. “Show the name of the user in the lockscreen”, is useful only if the device has multiple users. That is very different from the feature in Android 5.0 and later and OS X 10.7 and later for displaying custom text (e.g. your contact details) on the lock screen, which is useful even if the device has a single user.
Please reopen this bug report once you’ve decided which it is about.
This bug report is confusing two issues. “Show the name of the user in the lockscreen”, is useful only if the device has multiple users. That is very different from the feature in Android 5.0 and later and OS X 10.7 and later for displaying custom text (e.g. your contact details) on the lock screen, which is useful even if the device has a single user.
Please reopen this bug report once you’ve decided which it is about.