[thelist] force a human intervention requirement for signups or access to resources

[John C Bullas (soton.ac.uk relay)]

>
><tip type="preventing people using your online resources"
>author="David Dorward">
>
>Forcing people to type in the text hidden in a graphic is a good way to 
>make it impossible for users who can't see graphics (they might be blind, 
>they might just be using a text browser) to use your site.
>
>What's more, I hear that Porn sites are now trading conversions of 
>graphics to text for images. So their evilBot gets the graphic, passes it 
>to the user, finds out the text, signs up to the service and gives the 
>user porn. So images are no longer an insurmountable barrier to automated 
>signups.
>
>If you do use an image, make sure there is an alternative way for people 
>who can't make use of it to sign up.
>
></tip>

A Very valid point....... never thought about that ;(

FB