Way to skip reCAPTCHA images challenge

Question

I am implementing reCAPTCHA on one of my websites and I have successfully implemented it. It is working fine. Sometime the reCAPTCHA gets completed only by clicking the \"I\'m n

Answer 1

No, you can't skip it.

I am surprised that no one pointed out why we get them. The image recaptcha is not only to detect that the user is not a bot. If you notice, they are always related to traffic, bridges, signs, store fronts and so on. Google uses this tool to train artificial neural networks , mainly for autonomous cars. This method is called supervised training.

In neural networks there are two types of training, supervised and unsupervised training. Supervised training is when you provide a mechanism of manually grading the performance of the network. So when you choose all those car pictures, the network is also attempting to do the same, you are basically grading the network's performance. The more input it gets, the more intelligent it becomes by adjusting the weights of each neuron in the network.

In unsupervised training the network has to make sense of whatever you are trying to teach without outside help. It is a lot less efficient but it still can be done.

Answer 2

The new Google reCaptcha implements some sophisticated algorithms to decide if there is a real user or not. Some methods used are detection of request repeatedness (if there is a request repeating again and again in a small time period from one particular source), time counting (how long time passed since when the script was initialized), cursor events (like moving and clicking), scroll events, javascript common events triggering and XHR calls.

All these and many more methods, combine the invisible reCaptcha and in the case of the Checkbox reCaptcha, some of these detection methods get to trigger as well. If the algorithm detects something unusual for a human user, for example, clicking on the reCaptcha checkbox without the mousemove event to get triggered, then that will not evaluate to a human result and thus reCaptcha has to rely on something else to ensure that there is a human doing stuff and not a script bot.

The answer is that you cannot avoid it. If the basic reCaptcha method fails then it has to do something to provide protection.

Keep in mind that the users of your application will not see the images method very often like you do. I guess that you're doing some testing and trying the same things again and again after doing some code updates, thus you get the reCaptcha failing more often due to the repeatedness from the same source.