Yup, I agree that the arms race has reached the point where it's become
difficult for real people to pass either the visual or audio captchas
because they have to be scrambled so much to knock out the bots. As far
as the number of combinations, just the 26 letter and 10 numbers (36
glyphs) with, say, six chosen for each puzzle would be about 2 billion
different sets. Somebody would have to do a lot of recordings to crack
that even without the voice pitch and duration changes. I'm hoping
someday for a better puzzle which differentiates between perception
which is easy for humans and hard for algorithms. The best thing I've
found so far was published in a paper by Jonathan Lazar which uses sound
cues and timings. Maybe someday I'll have the bandwidth to try and
implement their solution.
triton.towson.edu/~jlazar/soundsright_chi2012.doc
CB
On 1/23/15 2:19 PM, Faisal ali wrote:
Hi,
to my knowledge, if you keep hitting on new challenge, a new set of
letters and numbers will appear. These bots keep hitting new challenge
and recording what shows up. Naturally, there is a certain amount of
letter and number combinations before this is exhausted. This is how
they are able to get passed it. for this very reason, companies like
google are looking for alternative methods of verifying whether you
are human. I have sighted family members and colleagues who also
complain that the captcha images are very difficult to read and the
audio captchas are extremely difficult to understand as they are
horribly distorted, to the point of being incomprehensible on some sites.
On Jan 23, 2015, at 11:12 AM, 'Chris Blouch' via MacVisionaries
<[email protected]
<mailto:[email protected]>> wrote:
Hmm, not so sure about that. I know the audio captchas I've played
with are a string of 6-8 random letters or numbers strung together
with different voices speaking each letter at different pitches and
durations overlaid with noise and background speech. I suspect nearly
every one is different.
CB
On 1/23/15 12:56 PM, Faisal ali wrote:
the trend for those are quite ominous. Bots are capturing all
captchas and recording all of them. what is happening now is that
these saved captchas are being placed on randomly created websites
and domaines where actual human beings are solving them thereby the
bots getting the proper responses they need to bypass captchas.
Google is implementing something very unique but there isn’t much to
go on to determine how affective it is.
On Jan 22, 2015, at 7:45 PM, 'Chris Blouch' via MacVisionaries
<[email protected]
<mailto:[email protected]>> wrote:
General problem with those is that an algorithm can parse and solve
those as well. The better solution is to just provide an audio captcha.
CB
On 1/22/15 7:10 PM, Joseph wrote:
Hello,
Why not request to solve a brief math problem? I’ve seen this on
several pages and I love this concept.
On Jan 22, 2015, at 4:04 PM, Sarai Bucciarelli
<[email protected]
<mailto:[email protected]>> wrote:
nope, and I suggested it.
On Jan 12, 2015, at 6:19 PM, Gabe Griffith
<[email protected] <mailto:[email protected]>>
wrote:
Hi,
Do they have an option for an audio captcha?
Gabe
On Jan 10, 2015, at 5:57 PM, Sarai Bucciarelli
<[email protected]
<mailto:[email protected]>> wrote:
Thought you guys would want to see the response I received from
Amazon regarding the captchas on the gift card page.
Hello,
Amazon.com <http://amazon.com/> implements CAPTCHA on several
features on Amazon.com <http://amazon.com/> such as password
changes. Users are presented with a picture, and asked to copy
the text string in the picture into a text entry field before
continuing.
Entering the characters displayed helps prevent automated
programs from accessing features on Amazon.com
<http://amazon.com/>. We do this to maintain the security of
your account and personal information.
If you're presented with a verification screen and you're
unable to read or enter the word(s) displayed, please click or
press enter on the following link. You can either enter your
number and we'll give you a call, or you call us directly at
one of the numbers provided on the page.
www.amazon.com/accessibility-contactus
<http://www.amazon.com/gp/r.html?C=3GG4DES2VDURU&R=29U7NMN7HZU71&T=C&U=http%3A%2F%2Fwww.amazon.com%2Faccessibility-contactus%3Fref_%3Dpe_584750_33951330&A=L2VILWOTCGCVWFJ3YUTTK1LWI7OA&H=HMM2AWSSYZHZPISD7FSW9PV0K5KA>
We hope to see you again soon.
Best regards,
Bea D.
*Did I solve your problem?*
Yes
<http://www.amazon.com/gp/r.html?C=3GG4DES2VDURU&R=29U7NMN7HZU71&T=C&U=http%3A%2F%2Fwww.amazon.com%2Fgp%2Fhelp%2Fsurvey%3Fp%3DA25LD1M5ZG0U4C%26k%3Dhy%26ref_%3Dpe_584750_33951330_cscem_hmdyes_ht_1&A=VZAXUBITMXTEFDBFGJJW3KECUKIA&H=ZD697QAXRKRNDCWYJYU9HUDLJPWA>
No
<http://www.amazon.com/gp/r.html?C=3GG4DES2VDURU&R=29U7NMN7HZU71&T=C&U=http%3A%2F%2Fwww.amazon.com%2Fgp%2Fhelp%2Fsurvey%3Fp%3DA25LD1M5ZG0U4C%26k%3Dhn%26ref_%3Dpe_584750_33951330_cscem_hmdno_ht_1&A=FRQF5EPAQXXQHNKVLU9XKWRA2RGA&H=QAOA43UIY5WSPJMYUFTPPHU0L34A>
Your feedback is helping us build Earth's Most Customer-Centric
Company.
Thank you.
*Amazon.com <http://amazon.com/>*
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