- From: David Poehlman <david.poehlman@handsontechnologeyes.com>
- Date: Wed, 3 May 2006 07:09:48 -0400
- To: "Mark | Carbon Chip" <mark@carbonchip.com>
- Cc: "'WAI Interest Group'" <w3c-wai-ig@w3.org>
Mark, This leaves out huge swaths of possible site users who either do not have sound cards or who cannot hear or hear well. Good idea though, it would not require someone who would beneffit from the audio to do extra work or to be ghettoed. On May 3, 2006, at 6:56 AM, Mark | Carbon Chip wrote: Has anyone done anything with Flash in conjunction with images? I started some work on a Flash system which automatically played a Captcha audio file that correlated with the Captcha image. I mention Flash, not wishing to incur any wrath :), but just as an augmentation to image based Captchas. Obviously user control isn't there, and to hear the audio again, the user would have to refresh the page, and invariably have a different character sequence read to them, but possible advantages are: 1. Augmentation only, would add to image Captcha method. 2. Lack of Flash player should not impair the procedure. 3. Flash may have a benefit over serving up audio files, in that another application would not need to be opened (eg if .MP3 served instead). 4. Very customisable - would not need to run a server side script to process and stitch audio files together - Flash could handle this, and different voice libraries (of higher/lower quality) could easily be added as required. Drawbacks: 1. Surprise to user - no control, unless directed to a separate page and informed of what is going to happen. 2. Plug-in dependent. I hadn't seen any type of open source server-side audio manipulation tool, and guessed that it would be quite server intensive and require privileges that many site owners would not have, hence Flash. Mark -----Original Message----- From: w3c-wai-ig-request@w3.org [mailto:w3c-wai-ig-request@w3.org] On Behalf Of David Poehlman Sent: 03 May 2006 11:30 To: Patrick Lauke Cc: WAI Interest Group Subject: Re: Text-based Captchas I found a really interesting one at: http://www.usps.gov where you change your mailing adddress. If you go to change address, they have a link that will provide you with the string in the clear. On May 3, 2006, at 4:39 AM, Patrick Lauke wrote: > Matthew Smith > Appropriate links are here: > <http://www.smiffysplace.com/blog/archives/169-php-text-captcha> Although the question are fairly simple, entailing nothing more than "common knowledge", it's still possible that some geniune user may not know the answer to them. More generally, users may actually be confused by finding any sort of question not related to the task they're trying to achieve (I want to book a flight, why is it asking me who the President of the US is?), so this may require a careful bit of preamble/legend, perhaps. But regardless, nice one. P ________________________________ Patrick H. Lauke Web Editor / University of Salford http://www.salford.ac.uk ________________________________ Web Standards Project (WaSP) Accessibility Task Force http://webstandards.org/ ________________________________
Received on Wednesday, 3 May 2006 11:09:57 UTC