(Dec-20-2017, 02:34 AM)Skaperen Wrote: i like the images captcha, it's more effective against mass registration bots.
I am not so sure. Recently I see those captchas to have a top image which tells you what to look for. Well, The image recognition software and algorithms are quite advanced. I imagine how you tell the program to get the top image and search for the same patterns. I know a guy who wrote a Python program to track the car's ID ( ID, number ? ) from a public webcam. It's fast. And the captchas are static images. What are we talking about... :D