1Password, an amazingly useful password manager for the Mac has just released a beta version which provides the ability to auto-fill and submit your passwords on the iPhone. This is a massive improvement for anyone who uses even slightly secure passwords, but gets frustrated when inputting them via the on-screen keyboard.
The info is stored using 448-bit Blowfish encryption on the iPhone itself, and requires that you input a master password on the phone, so there isn’t any communication with external devices. So, now you have the ability to use secure passwords sans frustration, for all of your accounts, knowing that your passwords will stay secure.
If you don’t have a Mac, I’m afraid you are out of luck. But, if you do have a Mac, you need to download 1Password, it is a great program, that makes my life much much easier every day – seriously. The addition of the iPhone autofill bookmarklet has now made the program invaluable.