Comments are back!
Posted on Thursday, November 04, 2004
After a few minutes of tinkering I’ve got an Image Authenitcation system in place. The system is essentially pretty simple. Every time a comment page is visited a random image is generated, along with its key. The user then just enters the key they see in the randomly generated image when posting a comment and the script checks this, failures will be rejected. Every 30 minutes cron goes through and deletes all the images more than 30 minutes old. Works for me.