Prevent illegal access on your website

VerificationA student cannot enter the school premises without the student ID, an employee is required to always wear his uniform and ID so to be recognized by the
company.

Credentials and certificates must be presented when you apply for loan
or any financing program, along with credit card usage is a valid ID   and any person who transacts legal matters with anybody or any establishment needs to present valid ID as proof of his genuine identity.

These are not uncommon scenes when we encounter the word authentic.  Authentic according to dictionary is synonymous to certain, legitimate, real or trustworthy. Thus, Authentication is the process of determining whether someone or something is, in fact, who or what it is declared to be. With that in mind, it is almost similar or closely related to identification.
What is Authentication?
It is the process of verifying who is accessing the application through some kind of a database query. In private and public computer networks, most especially the Internet, authentication is customary and done through the use of logon passwords.
Typically, user initially registers (or by someone else) by creating a username and self-declared or assigned (some websites do this but as temporary and can later be changed by the user) password. Other useful information is also being asked and must be complied before a successful account is created. In order to avail the full access and services or products offered on that site the user must know and use the previously declared password through login form on each subsequent use.
Why Use Authentication?
In online environments, this process comes first to ensure the validity of the site member and in the same way prevents or limits the access of unwanted users.  It is the basis for protecting data, valuable assets or confidential information. If user accounts are not properly identified and not verified through authentication, an organization’s resources and services are at risk especially if not properly controlled. Thus, knowing whom you are doing business with (authenticating their identity), should be at the top list of fundamental security consideration as it serves as the foundation in digital world.
Authentication with Joomla Applications
The Joomla AlphaRegistration extension, an easy and very quick to set up component with secured register form that helps website owner prevent or the least reduce fake accounts (also known as bot accounts) and spamming. It provides effective register protection and also helps clients or customers understand the registration process easily since it allows a display of image for each step or registering user. And what’s more, it comes in different languages.
But this does not all end to functionality and usefulness because an awesome authentication add-on that Joomla created surprisingly gives a little twist on the lay-out of the log-in form. Website owners who are fetish on visual and style and users who are bored with the same old standard login forms can now experience a sheer delight of fun while looking or typing at this SignalLogin form.
Its customizable login design will surely outdo the usual plain formats while effectively protects user login and professionally stops spamming robots. But not only that, it helps site owner remind their users to activate the account, and even novice can easily modify its features such as changing the height and background color, even replacing text like “forgot password” with images can be done. With configurable position, display and other options, your site will look far better than the
others.