Securing forms with random noisy images
Excellent tutorial from Zend on how to implement those “type what you see” things so common now days. It’s even used over at the MobileTracker Boards. Even if you don’t have a problem with bots filling out your forms, it’s hella impressive. I always think more highly of sites that do it (but being someone that builds such applications, I am probably not a target demo).
Only thing wrong with the tutorial is there is no demo. Come on boys. That’s half the fun!
Update: Added the link. Man I’m slow.
Link?
Ah crap. You caught me. It’s been updated. Thanks!
I’ve often wondered how a similar thing could be implemented while maintaining disabled access. See, it’s no use having a noisy image of the number 61733 and using alt=’61733′ or title=’61733′.
Nice to see you finally discovered Invision Board.
Hmmf. That’s a damn good point (as usual) Raena. Doesn’t seem to be a way around it unless you’re willing to put an email us if you’re disabled option.
What’s to prevent the bot from sending that message?
Well, I figured the email would go to a real human. Tough to register a few thousand accounts without someone catching on.