I have seen the case where a subscriber is asked to solve a simple
math problem. E.g., "what is twelve plus twenty-three?" This would
certainly be accessible. You could think of different types of
questions like "Enter the number that follows fifty-five." or "What
number comes before thirty-two?"

On 9/19/05, Robbie Carlton <robbie.carlton / gmail.com> wrote:
> But they stop the average spambot, which is what they're for I think.
> The simplest accessible alternative would be email verification, but this
> obviously slows the whole thing down.
> Has anyone thought of an accessible alternative that can be embedded on the
> page?
> 
> On 9/19/05, Austin Ziegler <halostatue / gmail.com> wrote:
> >
> > On 9/19/05, Federico <pix / yahoo.it> wrote:
> > > Hello,
> > > I'm creating a public registration process in rails and I would like to
> > > add some kind of spam filtering...
> > > Anyone knows about a library/implementation/gem of the capcha anti-spam
> > > in ruby or better already integrated into rails (validates_capcha)?
> >
> > Remember, though, that CAPTCHAs are NOT accessible, and you may need
> > to provide an alternate means for verification that is as secure.
> > CAPTCHAs are also imperfect and have been shown to be able to be
> > broken by computer programs.
> >
> > -austin
> > --
> > Austin Ziegler * halostatue / gmail.com
> > * Alternate: austin / halostatue.ca
> >
> >
> 
>