I bet it stops spam though, at least for a while. I've seen captchas that literally just say "Type the word 'whistle' in the box". They work because spammers o

I bet it stops spam though, at least for a while. I've seen captchas that literally just say "Type the word 'whistle' in the box". They work because spammers often don't target specific sites but just run generic bots. As soon as you throw something, even trivial, in the way, the spambots give up. It wouldn't work for a high-value target of course. If Indian Railway is a high-value target, then maybe they're just trying a 'dumb' solution and keeping an eye on spam to see if they need to put something cleverer in place.