Works on every major desktop and mobile browser.
(This repository was moved from https://9dotpatternlock.codeplex.com/)
Copy the _img,_script and _style folders to your hosting
Copy these 2 lines in your HTML source
<link rel="stylesheet" type="text/css" href="_style/patternlock.css"/>
give your password input element the className "patternlock"
e.g. <input type="password" name="password" class="patternlock">