Other Captcha options implementation

[member7me]

Hi!
I have a suggestion. Now it's a lot of spam and bots in xmpp. They exploiting weak captcha and lack of serios antispam, like in email protocol.
I suggest to implement at least new and modern captcha options. Like Keycaptcha, ReCAPTCHA (but it's worth) and so on. Now it's a lot of new and updated captcha's.
Because that captcha, that now exists in ejabberd, it's very weak and unserious. It's like from 2003. Spammers exploit it and registering spam bots.
What do you think about this? Is it possible suggestion?

[licaon-kter]

That captcha script is just an example, feel free to create one better and share it as open source. ;)

[badlop]

Another captcha script example was recently added, see #3533