New CAPTCHA

[pablocerdeira]

Unsig wrods wtih at lsaet fvie lerttes, you can scablrme the mid lertets and olny humans can read it fast.
The chatpca sircpt can wirte smoe wodrs and ask the vstiinat to re - wirte it in the corerct oderr.
Jsut a spuitd idea.

http://koivi.com/letter-scramble/

[Lastof]

If english wasn't my first language, I may not have been able to decipher that.

[Eelke]

You should of course do it in the main language of your board. For international boards it may not be a great idea.

[Nicholas the Italian]

If english wasn't my first language, I may not have been able to decipher that.

English is not my first language but I was able to decipher that (except "vstiinat" that I had never seen as word).
Anyway, I think it'd be simple for a bot to make all the possible anagrams and compare them to a vocabulary of existing words.

[EXreaction]

If english wasn't my first language, I may not have been able to decipher that.

English is not my first language but I was able to decipher that (except "vstiinat" that I had never seen as word).
Anyway, I think it'd be simple for a bot to make all the possible anagrams and compare them to a vocabulary of existing words.

Ya, that would not work at all.

Bots can just use a dictionary backend and have it check what matches with all the letters, length, and first and last letter. It would be easier for them than us.

[Midnight Phoenix]

recently we switched to this type of CAPTCHA

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MMMP""""""`MMMMMM"""""""`MMMMM""MMMM""MMMM#"""""""'MMMMM""""""""MMMM""MMMMM""M
MMM  mmmmm..MMMMM  mmmm,  MMMM. `MM' .MMMM#  mmmm. `MMMMmmm  mmmMMMM  MMMM' .M
MMM.      `YMMMM'        <MMMMM.    .MMMMM#        .MMMMMMM  MMMMMMM       .MM
MMMMMMMMM.  MMMMM  MMMb. "MMMMMMb  dMMMMMM#  MMMb.'YMMMMMMM  MMMMMMM  MMMb. YM
MMM. .MMM'  MMMMM  MMMMM  MMMMMMM  MMMMMMM#  MMMM'  MMMMMMM  MMMMMMM  MMMMb  M
MMMb.     .dMMMMM  MMMMM  MMMMMMM  MMMMMMM#       .;MMMMMMM  MMMMMMM  MMMMM  M
MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM#########MMMMMMMMMMMMMMMMMMMMMMMMMMM

SRYBTK

I havn't had any bots register in about 2 months!

[Balint]

Could be done with any ASCII Generator, see http://www.network-science.de/ascii/

[EXreaction]

recently we switched to this type of CAPTCHA

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MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM
MMMP""""""`MMMMMM"""""""`MMMMM""MMMM""MMMM#"""""""'MMMMM""""""""MMMM""MMMMM""M
MMM  mmmmm..MMMMM  mmmm,  MMMM. `MM' .MMMM#  mmmm. `MMMMmmm  mmmMMMM  MMMM' .M
MMM.      `YMMMM'        <MMMMM.    .MMMMM#        .MMMMMMM  MMMMMMM       .MM
MMMMMMMMM.  MMMMM  MMMb. "MMMMMMb  dMMMMMM#  MMMb.'YMMMMMMM  MMMMMMM  MMMb. YM
MMM. .MMM'  MMMMM  MMMMM  MMMMMMM  MMMMMMM#  MMMM'  MMMMMMM  MMMMMMM  MMMMb  M
MMMb.     .dMMMMM  MMMMM  MMMMMMM  MMMMMMM#       .;MMMMMMM  MMMMMMM  MMMMM  M
MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM#########MMMMMMMMMMMMMMMMMMMMMMMMMMM

SRYBTK

It is rather hard to read. Users ability to register should come before bot's inability to register.

I havn't had any bots register in about 2 months!

Because you use something different than everyone else. Even if you tell the user to enter in a random word(and keep the word in plain text) it will still stop bots for a while(longer if your board has less visitors).

[Midnight Phoenix]

We have also instructed users who are unable to decipher it to highlight it, as it can become easier to read.

By the way, I have a very active forum

Maybe you can read this one easier

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MMM""MMMMM""MMMM""MMMMM""MMMMMM""""""""`MMMM""MMMM""MMMMM'"""""`MMMMMMM'""""'YMM
MMM  MMMMM  MMMM  MMMMM  MMMMMM  mmmmmmmMMMM  `MM'  MMMM  .mmm,  MMMMM' .mmm. `M
MMM  MMMMM  MMMM         `MMMM'      MMMMMMMM.    .MMMMM  MMMMM  MMMMM  MMMMMooM
MMM  MMMMM  MMMM  MMMMM  MMMMMM  MMMMMMMMMMM  .mm.  MMMM  MM  M  MMMMM  MMMMMMMM
MMM  `MMM'  MMMM  MMMMM  MMMMMM  MMMMMMMMMMM  MMMM  MMMM  `MM    MMMMM. `MMM' .M
MMMb       dMMMM  MMMMM  MMMMMM  MMMMMMMMMMM  MMMM  MMMMM.    .. `MMMMM.     .dM
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UHFXQC

[Lieutenant Clone]

Its not too hard to read, but people with less than average vision would definatly have problems.

Plus thats still easy for a bot to decode. (example) Basically they take the ascii generator out of phpbb and modify it to decypher the generated ascii perfectly.