8 widely used captcha examples

Completely Automated Public Turing test to tell Computers and Humans Apart. (Blinks several times.)
Famously known CAPTCHA is a type of challenge test used in computing to identify whether the user is human or not. CAPTCHA comes in several sizes and of different types.  These all works quite well against spam some are harder to solve, some are fun and some will benefit you monetarily on your website. There are many CAPTCHA examples but the most widely used are mentioned below:

• Word solving
• Audio
• Branded
• 3D
• Math solution
• Drag and Drop
• JQuery Slider
• Tic Tac Toe

1. The standard word captcha with an audio option

This is the standard captcha available whenever a security check-in is required, where you need to write the word which has been displayed. But some of the distorted word images are hard to solve. To get this pass through it allows you to use the option of “Recaptcha”, in order to receive a new one.  There is also an audio option if you are unable to visually make out the word. These are the most commonly used while preparing a form in website development or app development.

2. Picture identification of captcha

This captcha provides users for selecting the elementary choice of selecting the correct image that they are asked to identify. This type of captcha usually never gets harder than the basic images, so you do not have to worry about your users not being able to depict them.

3. Math Solution

This type of captcha involves basic math problems and if your user cannot solve this basic questions then probably you do not want them to visit your website further. This provides with easy to read numbers and must be solved to get through the captcha.

4. 3D captcha

These type of captchas are called as “Super Captcha” because there are several 3D images which include both images and words and thus becomes hard for one to solve it.
 

5. Ad-injected captcha

These type of captcha helps your websites to earn some extra cash by publishing it, which in turn also helps in terms of brand recognition.

6. jQuery slider Captcha

This is a plugin which gives you the ability to add captcha to your forms which are easy to use. This plugin is very useful to keep the spammers away. This plugin lock is disabled until a person slides it to enable it.

7. Drag and drop Captcha

This is also one of the easy to use captchas. It is jQuery based which allows user to drag the required object or shape to pass through the security gate.

8. Tic Tac Toe Captcha

This captcha which involves gamification was designed for fun and an easy way to ensure that only humans can interact with your website. The captcha that does not hurt that much.

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