TL;DR: I want to have a simple password to unlock my computer with physical access and a complex password to connect over ssh. This, using the same account.
I'm looking for a solution to manage access to my computer. For someone who has physical access to my computer (like myself and a couple of my friends who will use it every once in a while), I would like to have simple and short password that keeps complete strangers out. However, I would like to have another complex password for the SSH server, because the SSH server will be available from the public internet from time to time and having a simple password would be to much of a security risk.
I have looked into passwordless authentication using ssh keys, but that's not what I'm looking for, because I want to be able to ssh into my computer from any device. (And as far as I understand, my computer should have a list of trusted ssh-keys.)
So ideally, I want to have a simple password to unlock my computer with physical access and a complex password to connect over ssh.