Alice uses my website on her own computer and sometimes also on a computer that Mallory also has access to. Alice likes using the password manager built in to the browser. She is aware that she needs to be more careful on computers that others also use.
Is there a way that I can provide a button to forget Alice's login details after she has finished (both username and password)? If she doesn't do this, Mallory has the ability to retrieve her login details.
There are thousands of Alices using my website, so I'm going to assume that trying to educate them all is a losing battle. I'm looking for a solution that works with human behaviour, not against it.