Re: LVTF question

This looks like the animation SC  - which prevents all of these if they last more than a few seconds.    Prohibiting them all together is a problem in that the are often used to bring attention to important things that would otherwise be missed — and also used to provide cognitive assistance  (how to do things etc.)

The time limit keeps them from preventing use — even if they might delay it a bit for people who are so distracted that the things that are intended to catch their attention — would trap it if they continued. 


Gregg



Gregg C Vanderheiden
greggvan@umd.edu



> On Feb 14, 2017, at 11:24 AM, lisa.seeman <lisa.seeman@zoho.com> wrote:
> 
> That helps, but the worst thing is moving content or  a flashing light or moving content (especially that has a higher contrast)
> The speed is not an issue and the size of the screen is also not as big an issue as for epilepsy 
> 
> I am just going from what I know from my daughter who also has a focusing issue, so it might need better research
> What I do know is content with any flashing (what ever the size) or moving will  hurt her
> 
> All the best
> 
> Lisa Seeman
> 
> LinkedIn <http://il.linkedin.com/in/lisaseeman/>, Twitter <https://twitter.com/SeemanLisa>
> 
> 
> 
> 
> ---- On Mon, 13 Feb 2017 23:59:45 +0200 Alastair Campbell <acampbell@nomensa.com> wrote ---- 
> > I was wondering if we have a SC for severe photophobia -people who get pain 
> > from intense light (any size) and flashing (any size) 
> 
> The text adaptation one covers colours of foreground/background text, and there is the current 2.3.1 Three Flashes, with it's threshold. 
> 
> They would not cover a bright image/video, or a small flashing area though. 
> 
> Is that something best dealt with at the OS/hardware level? Presumably to get to a website you'd have to open a browser, which has a large white canvas... So toning down brightness & whites would be important for general use. 
> 
> 
> > There should be a semantics to mark any section of elements with flashing 
> > moving or blinking and these of these so that they can be blocked and make 
> > sure that low contrast can not be overridden 
> 
> Possibly, but if you can override it at all, you should be able to override it whether it has semantics or not. 
> 
> -Alastair
> 
>