I wrote something like this as a module for Drupal a few years ago, and it still works very well for most sites: https://drupal.org/project/honeypot https://dru

I wrote something like this as a module for Drupal a few years ago, and it still works very well for most sites: https://drupal.org/project/honeypot https://drupal.org/project/honeypot The honeypot (or honey trap) is somewhat effective against most bot software, and the timestamp protection is actually pretty effective against most human spammers. However, there are many sites that will require active spam prevention due to their popularity, and thus targetability. Also, regarding accessibility, there are many ways of implementing these spam prevention techniques without impacting accessibility, even without using JS.