I feel like the problem would be generating enough illusions. They would ideally need to be used only once, otherwise a bot farm could recreate your illusion da

I feel like the problem would be generating enough illusions. They would ideally need to be used only once, otherwise a bot farm could recreate your illusion database in no time flat. Besides, CAPTCHAs are insecure anyways because if you try to protect anything valuable spammers will just hire humans to break them.