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青山 素子:
Link to Mod

This modification allows you to use reCAPTCHA instead of the built-in Visual Verification system. It supports the SMF 2.0 series.

Portions of the code use the PHP reCAPTCHA API.

This mod and other information can be found at:


* Use reCAPTCHA on your forum in place of or in combination with the built-in verification options.
* Support for built-in reCAPTCHA themes

How to Use
You can enable reCAPTCHA by going to:

Admin -> Configuration -> Security and Moderation -> Anti-Spam

A set of keys are required for operation of reCAPTCHA. A link is provided in the settings to register for a key pair.

2.0 Upgrade Note
If you are upgrading from a version older than 2.0, there is one major change to be aware of.

Starting with version 2.0, this modification no longer replaces the built-in image verification. It now operates independently of those settings. If you don't want the built-in image verification, make sure to set it to "None".

Known Issues

* The error messages are the built-in ones, so they will talk about letters not being filled in or matching.

This code is licensed under the terms of the BSD 3-Clause License. SMF code used in this mod is copyright Simple Machines. All original code is copyright Michael Johnson.

The reCAPTCHA PHP library is licensed under the BSD 3-Clause License.

"SMF" and "Simple Machines" are trademarks of Simple Machines.

What's the advantage of this?

your helping to digitise books.

When scanning book and trying to use OCR, it is very imperfect and makes tonnes of mistakes.
So reCaptcha are using humans to translate what the letters are, as a byproduct of passing a validation test.

Great Idea ! Never heard before about reCaptcha but really great ! Btw, also great mod ;)

So its doing something for a worthy cause at the same time.


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