Monday, August 6, 2012

Audio Captchas

After a long histus, I went to LinkedIn, and was presented with the login page, which in addition to my credentials, also required me to fill in a Captcha.

I have seen many captchas, but this one has gone ridiculous. The text on at least one of the 2 words was completely unreadable, and despite refreshing 3-4 times, I could not feel confident I could pass the captcha test. Then came the moment of increased ridiculousness... I decided to try the audio captcha.

As the noise of the captcha started coming out from my speakers, I thought there was something wrong with my speakers - maybe a loose contact. I continued to believe this for the next 20 seconds or so... I hope this conveys what kind of audio noise the captcha made.

I found some measure of solace in the thought that my speakers are bad, rather than the other thought that they really expect me to find find English language words / alphabets in this soup and I am failing miserably. I am not sure if I will be able to detect a dog barking in that din. What if the captcha was "woof woof"?

The sound track can be described to be equivalent to being in a disco playing 4 loud tracks, all at the same time. Playing tracks you have never heard and now you are asked to decipher the lyrics of one of the songs. And you have to get it right the first time, because the thought of hearing it a second time is starting to give you a headache.

I am not trying to exaggerate... I could not confidently decipher a single word / alphabet of the audio captcha. I don't even know if it had words or alphabets. This is becoming ridiculous and needs a better solution.

Of course, I do understand why they want to make captchas difficult to solve by computers. But there has got to be a better way.


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