LastPass now handles logins and form filling in any browser
To install the bookmarklet, log in at LastPass.com and look for the icon on the left side of your control panel. Click it, and an overlay appears with three links: LastPass Login, Fill (for passwords), and Fill Forms. Just drag them to your bookmark toolbar and you're set.
Joe Siegrist of LastPass offered a rundown of how the process works:
Your actual key can then be decrypted from a login session with LastPass.com + the local 256-bit random number. This allows LastPass to offer [bookmarklet] functionality while staying true to the privacy statement of never having access to your sensitive data."
The LastPass addon is a free download and works on Windows, Mac, and Linux. You don't need it to use the bookmarklets, though - just register for an account and use the web management page to add login and form filler information.
All my saved logins from years of browsing with Firefox can now be easily (and securely) accessed in Chrome, Opera, and on my iPod with a simple little button.