CAPTCHA software is used on a lot of sign-ups for services, in order to authenticate users are not robots.

The software was created to stop spam robots from creating thousands of accounts and destroying a service, but overtime these spambots have become even smarter, which has lead to harder CAPTCHA code.

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Google is now redefining the identity of CAPTCHA, by simplifying the experience. Users no longer have to type in random jumbled letters together, but instead need only tick one checkbox.

Google claims there is plenty of small differences a human makes - compared to a robot - when clicking a checkbox. Google will apparently be able to stop these differences and make sure spambots do not get in, claiming 99.8 percent accuracy.

When ticking the CAPTCHA box, users will be prompted to match an image to another image. Google claims it is much harder for spambots to see images - especially if the images are not exactly the same or multiple choice.

Google is also focusing the CAPTCHA revamp efforts to make mobile users get less frustrated. CAPTCHA on mobile can be a real pain, especially when the browser zooms-in incorrectly, forcing the user to swipe to see the full CAPTCHA code.

Hopefully, the new efforts will work to make this experience a little less painful. Clearly Google sees it as an upgrade, but the question of security still looms.

Spambots have become less of a nuisance for most of the web, due to developers incorporating better auto-spam removal tools. Email, social networking and other services all offer some type of filter to remove unwanted spam from the user's feed.