[magnus]

Originally Posted by GameWizard

But i find it confusing how yes, it makes it easier for humans, but at the same time could potentially make it easier for bots as well, could it not? All the bot would need to do is identify that your script is being used then attempt to read the word(s) which don't even need to be typed correctly! The first 3 letters or so seem to be the only requirement, the rest can be neglected or mistyped and the script still allows the user to continue...

There are 2 words. The challenge word and the variable word. The variable word can be anything. The challenge word must be typed 100% correctly. There's no 1, 2 or 3 letter minimum. Each challenge word must be 100% accurate.

Regardless of the variable word, this system, at worst, is no less secure than the default CAPTCHA. So there's no concern in that department.

The following is pure speculation, as the exact algorithim is intentionally not divulged:

It's possible that the variable word may have a minimum character requirement as the system may be able to determine the word length while not being able to exactly decipher the actual letters. Again, this is pure speculation on my part.