Comments on: A Dynamic, User-Friendly Captcha With Pictures http://blog.plantwars.com/index.php/2009/09/07/a-dynamic-user-friendly-captcha-with-pictures Development of a PBBG Tue, 04 May 2010 02:53:49 +0000 hourly 1 http://wordpress.org/?v=3.0 By: links for 2009-09-08 | Yostivanich http://blog.plantwars.com/index.php/2009/09/07/a-dynamic-user-friendly-captcha-with-pictures/comment-page-1#comment-158 links for 2009-09-08 | Yostivanich Tue, 08 Sep 2009 14:04:23 +0000 http://blog.plantwars.com/?p=88#comment-158 [...] A Dyna­mic, User-Friendly Captcha With Pic­tu­res « Plant Wars “At some point, a user had recom­men­ded I take a look at this paper by some peo­ple over at Goo­gle. They imple­ment a captcha by having a sli­der bar with a ran­domly rota­ted image that the user then has to straigh­ten out using the sli­der bar. This is really cool, and I use the basic idea but sim­pli­fied yet further. As I am only trying to pro­tect my game from being able to be pla­yed by a pro­gram, I don’t have to be quite as rigo­rous.” Sim­ple and easy captcha. (tags: captcha pro­gram­ming php secu­rity web­de­ve­lop­ment) [...] [...] A Dyna­mic, User-Friendly Captcha With Pic­tu­res « Plant Wars “At some point, a user had recom­men­ded I take a look at this paper by some peo­ple over at Goo­gle. They imple­ment a captcha by having a sli­der bar with a ran­domly rota­ted image that the user then has to straigh­ten out using the sli­der bar. This is really cool, and I use the basic idea but sim­pli­fied yet further. As I am only trying to pro­tect my game from being able to be pla­yed by a pro­gram, I don’t have to be quite as rigo­rous.” Sim­ple and easy captcha. (tags: captcha pro­gram­ming php secu­rity web­de­ve­lop­ment) [...]

]]> By: admin http://blog.plantwars.com/index.php/2009/09/07/a-dynamic-user-friendly-captcha-with-pictures/comment-page-1#comment-157 admin Tue, 08 Sep 2009 12:33:19 +0000 http://blog.plantwars.com/?p=88#comment-157 I just updated the post - users do get jailed after 5 tries. Since it's only an in-game captcha, I have that luxury; I don't have to defend against the Internet spam bot population as a whole. I just updated the post – users do get jailed after 5 tries. Since it’s only an in-game captcha, I have that luxury; I don’t have to defend against the Internet spam bot population as a whole.

]]> By: signal http://blog.plantwars.com/index.php/2009/09/07/a-dynamic-user-friendly-captcha-with-pictures/comment-page-1#comment-156 signal Tue, 08 Sep 2009 12:12:01 +0000 http://blog.plantwars.com/?p=88#comment-156 The problem is that there's 0.33 probability of randomly guessing the correct image. A bot could just try continuously and achieve 33% of success. You should add a check that stops users after N tries The problem is that there’s 0.33 probability of randomly guessing the correct image.
A bot could just try continuously and achieve 33% of success.

You should add a check that stops users after N tries

]]> By: BJSievers http://blog.plantwars.com/index.php/2009/09/07/a-dynamic-user-friendly-captcha-with-pictures/comment-page-1#comment-155 BJSievers Tue, 08 Sep 2009 05:29:07 +0000 http://blog.plantwars.com/?p=88#comment-155 The irony that I am still faced with a standard CAPTCHA in order to comment on the blog about a newer, better captcha method amuses me. The irony that I am still faced with a standard CAPTCHA in order to comment on the blog about a newer, better captcha method amuses me.

]]>