Hides/shows content of password-inputfields by triple shiftkey press
Password-Toggle is a tiny Firefox extension that allows you to make the contents of password fields visible by pressing the Shift key three times, so you can check your input.
* The extension also handles dynamically added input fields; so it should work on all websites.
* The extension doesn't add elements to websites, so it can't interfere with the layout.
* Important: this extension relies on keydown and keyup events, so it may not work with touchscreen devices.