- From: Matthew Smith <matt@kbc.net.au>
- Date: Sun, 25 Jan 2004 10:03:52 +1030
- To: WAI Interest Group <w3c-wai-ig@w3.org>
Greetings All I have seen on this list, on more than one occassion, discussions about the technique used by Yahoo and others to prevent 'robot' registrations by presenting a graphic of a word or number that has to be keyed into a form. As there is no appropriate alt text to these images (which would defeat the point, making them machine-readable), this obviously constitues an accessibility problem. This may have been done before, but what I propose for such an application is this: A sentence is selected at random, say from a book (Project Gutenberg text?) or a series of random words. An input field with the message "please select the fifth word from the following sentence" is displayed, followed by the sentence/words. It would probably be useful to put an anchor by the input field so that the user could skip back to it easily once they had read the sentence/words. I can see that a 'robot' could be programmed to recognise ordinals, but by varying the text, it would make it harder for 'robot' programmers to make sense of what is being asked. Comments? Cheers M -- Matthew Smith Kadina Business Consultancy South Australia http://www.kbc.net.au
Received on Saturday, 24 January 2004 18:33:57 UTC