Script Summary: Logs in automatically to ICA-banken.
Simply add a bookmark to https://www.icabanken.se/Secure/Login/LoginPw.a... where
NUM is your full personnummer, e.g.
The first time you visit that URL, you will be prompted for your PIN code. The code will then be used to log you in automatically whenever you visit the bookmarked URL.
You can change the stored PIN through a command in the Greasemonkey menu when at ICA's site.
Please note that your PIN will be blocked if you get it wrong three times in a row, so don't play around too much (I did :p).