Javascript & Captcha

[Daniel Kaplan]

I noticed a lot of sites that do sign ups in Javascript seem to skip the
Captcha part. I just want to know...is it that safe or am I missing
something?

[GArlington]

Re: Javascript & Captcha

On Oct 15, 11:38 am, "Daniel Kaplan" <NoS...@NoSpam. comwrote:

I noticed a lot of sites that do sign ups in Javascript seem to skip the
Captcha part.  I just want to know...is it that safe or am I missing
something?

You are missing the explanation of what you actually want...

[Daniel Kaplan]

Re: Javascript &amp; Captcha


"GArlington " <garlington@tis cali.co.ukwrote in message
news:85a65eed-3cf9-47e9-93b7-d79b60bf6ebd@s2 0g2000prd.googl egroups.com...
On Oct 15, 11:38 am, "Daniel Kaplan" <NoS...@NoSpam. comwrote:

I noticed a lot of sites that do sign ups in Javascript seem to skip the
Captcha part. I just want to know...is it that safe or am I missing
something?

You are missing the explanation of what you actually want...

What I meant was...does doing a "sign up" or "register" routine via
Javascript somehow circumvent the need for using a CAPTCHA? I would think
no. But so many sites seem to be going that route.

[Laser Lips]

Re: Javascript &amp; Captcha

On Oct 15, 12:02 pm, "Daniel Kaplan" <NoS...@NoSpam. comwrote:

"GArlington " <garling...@tis cali.co.ukwrote in message
>
news:85a65eed-3cf9-47e9-93b7-d79b60bf6ebd@s2 0g2000prd.googl egroups.com...
On Oct 15, 11:38 am, "Daniel Kaplan" <NoS...@NoSpam. comwrote:
>

I noticed a lot of sites that do sign ups in Javascript seem to skip the
Captcha part. I just want to know...is it that safe or am I missing
something?

>
You are missing the explanation of what you actually want...
>
What I meant was...does doing a "sign up" or "register" routine via
Javascript somehow circumvent the need for using a CAPTCHA?  I would think
no.  But so many sites seem to be going that route.

Hi, you can also do a CAPTCHA in JavaScript...li ke this one >>

http://cylo.co.uk/CAPTCHA.html

Graham

[Gregor Kofler]

Re: Javascript &amp; Captcha

Daniel Kaplan meinte:

What I meant was...does doing a "sign up" or "register" routine via
Javascript somehow circumvent the need for using a CAPTCHA? I would think
no. But so many sites seem to be going that route.

Why would you need a captcha for "sign up" or "register" at all? Apart
from annoying the visitors of your webpage.


Gregor



--
http://photo.gregorkofler.at ::: Landschafts- und Reisefotografie
http://web.gregorkofler.com ::: meine JS-Spielwiese
http://www.image2d.com ::: Bildagentur für den alpinen Raum

[Laser Lips]

Re: Javascript &amp; Captcha

On Oct 15, 1:57 pm, Gregor Kofler <use...@gregork ofler.atwrote:

Daniel Kaplan meinte:
>

What I meant was...does doing a "sign up" or "register" routine via
Javascript somehow circumvent the need for using a CAPTCHA?  I would think
no.  But so many sites seem to be going that route.

>
Why would you need a captcha for "sign up" or "register" at all? Apart
from annoying the visitors of your webpage.
>
Gregor
>
--http://photo.gregorkof ler.at::: Landschafts- und Reisefotografie http://web.gregorkofle r.com ::: meine JS-Spielwiesehttp://www.image2d.com     ::: Bildagentur für den alpinen Raum

Bots of course, DOH!

[Dr J R Stockton]

Re: Javascript &amp; Captcha

In comp.lang.javas cript message <SWlJk.29$PA2.1 9@nntpserver.sw ip.net>,
Wed, 15 Oct 2008 14:57:56, Gregor Kofler <usenet@gregork ofler.at>
posted:

>
>Why would you need a captcha for "sign up" or "register" at all? Apart
>from annoying the visitors of your webpage.
>

As a general remark : I find that which Google sometimes gives is often
hard to get right, whereas that which Wikipedia gives when a new URL is
entered in an article is easy to read. Presumably both are sufficiently
effective. I don't know whether, technically, they count as CAPCHAs.
SAM, Lasse, Martin might get different Wiki ones.

The Google one annoys me; the Wiki one does not.

--
(c) John Stockton, nr London, UK. ?@merlyn.demon. co.uk Turnpike v6.05 MIME.
Web <URL:http://www.merlyn.demo n.co.uk/- FAQqish topics, acronyms & links;
Astro stuff via astron-1.htm, gravity0.htm ; quotings.htm, pascal.htm, etc.
No Encoding. Quotes before replies. Snip well. Write clearly. Don't Mail News.

[Thomas 'PointedEars' Lahn]

Re: Javascript &amp; Captcha

Dr J R Stockton wrote:

Gregor Kofler posted:

>Why would you need a captcha for "sign up" or "register" at all? Apart
>from annoying the visitors of your webpage.

>
As a general remark : I find that which Google sometimes gives is often
hard to get right, whereas that which Wikipedia gives when a new URL is
entered in an article is easy to read. Presumably both are sufficiently
effective. I don't know whether, technically, they count as CAPCHAs.

Criteria for whether something counts as a *CAPTCHA* can be derived from the
meaning of the acronym: Completely Automated Public Turing test to tell
Computers and Humans Apart. Insofar any representation that is hard to
guess by a(n OCR) program counts as a CAPTCHA -- although the concept itself
is evidently flawed.

See also <http://en.wikipedia.or g/wiki/CAPTCHA>


HTH

PointedEars
--
var bugRiddenCrashP ronePieceOfJunk = (
navigator.userA gent.indexOf('M SIE 5') != -1
&& navigator.userA gent.indexOf('M ac') != -1
) // Plone, register_functi on.js:16

[Gregor Kofler]

Re: Javascript &amp; Captcha

Laser Lips meinte:

Check out my captcha to see a new concept of captch http://cylo.co.uk/CAPTCHA.html

Interesting. However, pitfalls like lack of activated JS or JS
compatibility remain.

>>* there are much less annyoing techniques, which are equally effective

Yeah I would agree with this too, ok point taken

A combination of honeypots, randomly generated field names, verification
via session variables, some simple content analysis (one could go for a
serious bayesian approach), a minimum time between delivery and
submission (no one fills out forms in 5 seconds).

All these measures are completely "invisible" and need no client-side
scripts.

Gregor


--
http://photo.gregorkofler.at ::: Landschafts- und Reisefotografie
http://web.gregorkofler.com ::: meine JS-Spielwiese
http://www.image2d.com ::: Bildagentur für den alpinen Raum

[Dr J R Stockton]

Re: Javascript &amp; Captcha

On Oct 16, 12:18 am, Thomas 'PointedEars' Lahn <PointedE...@we b.de>
wrote:

Dr J R Stockton wrote:

As a general remark : I find that which Google sometimes gives is often
hard to get right, whereas that which Wikipedia gives when a new URL is
entered in an article is easy to read.  Presumably both are sufficiently
effective.  I don't know whether, technically, they count as CAPCHAs.

>
Criteria for whether something counts as a *CAPTCHA* can ...

HTH

An impressively pointless response from the pointed one. Had I wanted
to know, or had it mattered, I would have looked it up. ISTM that you
behave like a badly-programmed AI - you really should see a good
psychiatrist or craniotomist.

--
(c) John Stockton, near London, UK. Posting with Google.
Mail: J.R.""""""""@ph ysics.org or (better) via Home Page at
Web: <URL:http://www.merlyn.demo n.co.uk/>
FAQish topics, acronyms, links, etc.; Date, Delphi, JavaScript, ....|