Re: Captchas was Re: ISP wants to stop outgoing web based spam

2006-08-16 Thread Paul Jakma
On Wed, 16 Aug 2006, Simon Waters wrote: You snipped the bit where I said "It would work for a minority use." Sorry, don't think that is relevant really - least I have no data on what minority uses are for captchas, nor majority uses or what the difference is. The reason people use image

Re: Captchas was Re: ISP wants to stop outgoing web based spam

2006-08-16 Thread Richard A Steenbergen
On Wed, Aug 16, 2006 at 09:21:06AM +0100, Simon Waters wrote: > > The reason people use image recognition is it is something (most) humans find > > very easy, but requires considerable investment of effort (or resource for > self training) to teach computers, and readily permits of variations

Re: Captchas was Re: ISP wants to stop outgoing web based spam

2006-08-16 Thread Simon Waters
On Wednesday 16 Aug 2006 01:13, Paul Jakma wrote: > On Thu, 10 Aug 2006, Simon Waters wrote: > > I've no doubt some captcha can be invented in ASCII, but this isn't > > it. > > 'tis. It works for at least one blog platform, where I've never once > had comment spam. You snipped the bit where I sai

Re: Captchas was Re: ISP wants to stop outgoing web based spam

2006-08-15 Thread Matthew Sullivan
Paul Jakma wrote: ASCII captches are no less effective than image-captcha just without the nasty "ban the blind from the internet!" side-effects. Then again you have Authen::Captcha that has sound based Captcha's as well / Mat

Re: Captchas was Re: ISP wants to stop outgoing web based spam

2006-08-15 Thread Paul Jakma
On Thu, 10 Aug 2006, Simon Waters wrote: I've no doubt some captcha can be invented in ASCII, but this isn't it. 'tis. It works for at least one blog platform, where I've never once had comment spam. a kid), and it would be relatively trivial to code it to handle the types of questions fo

Captchas was Re: ISP wants to stop outgoing web based spam

2006-08-10 Thread Simon Waters
On Thursday 10 Aug 2006 01:14, Paul Jakma wrote: > On Thu, 10 Aug 2006, Stefan Bethke wrote: > > Do you have any links or references? > > Just ask the user some basic question. E.g.: > > What is 2 added to 23?: I've no doubt some captcha can be invented in ASCII, but this isn't it. AI alr