- From: David Poehlman <poehlman1@comcast.net>
- Date: Sat, 24 Jan 2004 18:40:36 -0500
- To: "WAI Interest Group" <w3c-wai-ig@w3.org>
Or at least offer this as a choice and there is one other technique that could be used and that is a simple question that could be rotated for each hit. hundreds of these questions are available, such as where does the sun rise or set, how long is a day? how may days in a year, month, week, leap yar, how many weeks ina month, year... This was not my idea but I ad it here for the sake of completness. ----- Original Message ----- From: "Matthew Smith" <matt@kbc.net.au> To: "WAI Interest Group" <w3c-wai-ig@w3.org> Sent: Saturday, January 24, 2004 6:33 PM Subject: 'Anti Robot' Registrations 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 18:40:36 UTC