As most people here, I have a couple of accounts out there (over 300 last time I looked). I consolidated a few with OpenID but not every site supports them. I also use password managers and safes but all those solutions leave something to be desired. Which led me to the following idea: Can I use my mobile phone as a "security" device?
It has an independent keyboard, it can connect to my computer via USB, etc. Is there any software (like a plug-in for Firefox) that allows to fill in passwords from a mobile phone or, even better, work something like OpenID (no passwords involved but the master password on the mobile device)?
Note: This question is not about security issues with mobile phones (easy to steal, etc) nor is it about security bugs in OSs for mobile phones and I'm also not interested in Firefox Sync and the like. I really would like to replace all "gimme password" dialogs with pressing a button on my mobile phone.