This is a piece of script that can authenticate log-in inputs without the need for any database.
This piece of software is built with PHP. This script package does not need the support of database like MySQL to get log-in done securely. The script will run on any server that runs PHP. The design is simple and adequately commented so that understanding the logic is no problem at all. It is also very customizable. You would be able to understand the script clearly enough to be able to do any tweaking. Most software development and website development project could use this package. Making the log-in work with a database in the classical way takes a lot of development and testing time to make sure it works properly. You will also have to make sure the log-in related actions are all very secure.
The log-in interface presented by this script package is like any other log-in page and should not cause any issues with end users. You simply enter your user id and a password into text boxes provided for the same in the interface. This simple script protects you password and serves the same purpose of classical log-in page that works with a database, typically MySQL for free source developer community. The code would be easy to understand for the user community, this package is addressed to. Customizing it to suit your conditions should not pose any problems at all. This is a very good piece of code and could be tried if you have a need to use it.