P.U.L.S enables users to register and then login to a website or -page. It is user friendly (password retrieval, remeber me function), developer friendly (script stays in one directory but can protect pages anywhere in your website, seperate HTML-, config- and laguage files, register option can be switched on or off), and secure (passwords are sent and stored encrypted, user input is filtered to prevent code injection). Requires PHP >= 5 and MySQL.