MOD Database Manager wrote:
To prove you are human, you look at photographs and check a box if they are pictures of animals.
The strength of this captcha is that the images are easily replaced. That means that everyone can have a custom captcha, with very little effort.
I was quite excited when I first glanced this mod. Sadly I've since noticed a flaw.
This relies on a checkbox, and checkboxes only have two states - checked or unchecked. For a bot this means 50% success rate without even looking at the images.
Sorry for be so negative so early but I was hoping that if I raised this during the mods infancy then we could come up with a solution! There must be a way to get information from the user without giving multiple choice options that a bot could exploit.
Here's a thought. Have say 6 images - a dog, a car, a tree, a computer, a person, a picture of the sea (for example) - and ask the user to translate the order they appear in the images into a field.
There are 2 obvious methods that come to mind:
- the simpler route
36 checkboxes, 6 x 6 with 1st, 2nd, 3rd etc. along the top and dog, car, tree etc. along the side
- slightly more complicated but less multiple choice (less guessable for bots)
Assign each type of image a number 1 through 6, provide a text box into which the user enter their 6 digit number (ordered as the images are ordered)