[egberts1]

You can opt-in for a "no visual echo" of any character (asterisk or not) for password prompts:

----

For KDE:

    sudo vim /etc/sddm.conf.d/hide-password.conf

insert in:

    [Greeter]
    ShowPasswordEcho=false

then reboot.

----

For `sudo`:

    sudo vim /etc/sudoers.d/password-no-visual-echo

Insert/replace `Defaults` with:

    Defaults !pwfeedback

----

For GNOME, you have to modify `unlockDialog.js`

    sudo vim /usr/share/gnome-shell/js/ui/unlockDialog.js

And do one of the following (version-specific):

    this._passwordEntry.clutter_text.set_password_char('');

or in newer version, replace `echo_char` with `null`. Reboot required.

[rurban]

Or just replace sudo-rs with sudo.

Opinionated security tools maintainers rarely get it right.

[cozzyd]

Can I change my password char to an emoji?

[egberts1]

Only with GNOME

[necovek]

The "cinfiguration" for GNOME actually modifies the source code, so if that's the bar, you can do it everywhere. :)

[herewulf]

In that case, I'll make mine echo a random number of characters pee key stroke. The feedback is nice but then there are no worries about someone observing password length.

[odo1242]

I mean, Gnome being in JavaScript makes it easier

[egberts1]

Yes, easier for hacker to tweak

[odo1242]

I mean, that's the point yes