This hack applies a bot safe visual confirmation system to the registration and/or guest post forms to prevent bots from registering and/or spamming as guests.

The hack can generate fully automatic and random questions (text or graphic) or you may define your own individual questions.

ABQ has several techniques that prevent bots from reading the generated questions. This is done by changing variables. To help users more easily answer the questions there is a multiple choice option.

You may also upload your own fonts which are then used for generation of automatic questions (GD and Freetype required).