Write down or copy/paste/email the login in this fashion one-by-one.
If they are after a pile of logins, keep clicking "Show" all the way down the list. Capture the screen and email/print or simply take your smartphone and snap a picture.
Scroll through the entire login list to get it all.
Takes very little time to get all of someone's private login data in this fashion. An, since the vast majority of Internet users re-use login user id's and passwords across many services I would imagine it might not take long to identify this pattern and have access to every login.
Locking the workstation behind a password doesn't help either for a number of reasons, not the least of which is that workstation password removal, recovery or cracking tools are widely and easily available.
