RE: Enabling Zoom on Mobile Devices

Ø  Does any of this change when the Screen Reader of the device, (VoiceOver, Talkback, Narrator) is turned on? I recall Apple iOS 6 I think having an issue

iOS has supported Zoom and VoiceOver simultaneously for some time now as does Mac OS X.  At one point I read that when the three finger accessibility zoom feature in iOS 5 was active it would automatically override the user scalable meta tag  on pages allowing pinch zoom to magically work – but that does not work now – and I’m not sure if it ever really worked.

IMO the accessibility feature Zoom on iOS (three finger zoom) is an assistive technology and thus doesn’t count for meeting SC 1.4.4.

Jonathan

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Jonathan Avila
Chief Accessibility Officer
SSB BART Group
jon.avila@ssbbartgroup.com<mailto:jon.avila@ssbbartgroup.com>

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From: alands289@gmail.com [mailto:alands289@gmail.com]
Sent: Thursday, January 15, 2015 9:11 PM
To: Gregg Vanderheiden; Jonathan Avila
Cc: Mike Elledge; GLWAI Guidelines WG org
Subject: Re: Enabling Zoom on Mobile Devices

Gregg, et al,

Does any of this change when the Screen Reader of the device, (VoiceOver, Talkback, Narrator) is turned on? I recall Apple iOS 6 I think having an issue where zoom was not supported when VoiceOver was turned on. I know that in Win8 zoom is available without special setting changes when Narrator is on and Android 4.2.2 (perhaps earlier) and up have triple tap for zooming that works with Talkback on. Not sure of MacBook or desktops or iOS 6-8.
We need to make sure the wording of guidelines is that AT does not disable zooming.

Regards,

Alan

Sent from Windows Mail

From: Gregg Vanderheiden<mailto:gregg@raisingthefloor.org>
Sent: ‎Thursday‎, ‎January‎ ‎15‎, ‎2015 ‎8‎:‎14‎ ‎PM
To: Jonathan Avila<mailto:jon.avila@ssbbartgroup.com>
Cc: Mike Elledge<mailto:melledge@yahoo.com>, GLWAI Guidelines WG org<mailto:w3c-wai-gl@w3.org>

The zoom feature has nothing to do with the site.

the web page has no idea that it is being zoomed.   Think of it as using a magnifying glass.   There is simply nothing that the web page can do to keep you from using a magnifying glass — or a  mobile zoom feature on the phone.

You wrote:
The zoom feature in Safari on iOS for example does not function when user scaling is blocked so as a person with a visual impairment I am prevented from zooming in on the page with browser zoom.

I know of no way to block the zoom feature.    I don’t know what you mean by ‘scaling’  but I never mentioned scaling.  I’m talking about zoom or magnify.
You cannot block magnify/zoom that I know of — so you cannot fail the SC.

Can you show me a page (send me a URL) of any page that you think has magnification blocked?
I’ll give it a try.    There is always a chance that I am wrong… so willing to look if you think you have something that can block a magnification function.   don’t see how it can be done but willing to look.

Thanks

gregg

On Jan 15, 2015, at 5:44 PM, Jonathan Avila <jon.avila@ssbbartgroup.com<mailto:jon.avila@ssbbartgroup.com>> wrote:

>  Also, please note that the normal ZOOM feature in all browsers is sufficient to meet this requirement.   It is therefore virtually impossible today to not meet this SC unless you either

Greg, I have to disagree, if a site designed for mobile blocks user scaling then how can I use the browser zoom feature.  The zoom feature in Safari on iOS for example does not function when user scaling is blocked so as a person with a visual impairment I am prevented from zooming in on the page with browser zoom.  Can you please explain how this does not fail WCAG – the situation described above is assuming they don’t have another in-page or apple-system-xxx font techniques as discussed earlier..

In my experience most mobile browsers do not have a zoom capability when user scaling is turned off.   Only a few offer an option to override the setting.  IMO there is an accessibility support issue on mobile for this success criteria – there is not sufficient support in browser to override the setting and therefore it’s a failure.

Jonathan

--
Jonathan Avila
Chief Accessibility Officer
SSB BART Group
jon.avila@ssbbartgroup.com<mailto:jon.avila@ssbbartgroup.com>

703-637-8957 (o)
Follow us: Facebook<http://www.facebook.com/#%21/ssbbartgroup> | Twitter<http://twitter.com/#%21/SSBBARTGroup> | LinkedIn<http://www.linkedin.com/company/355266?trk=tyah> | Blog<http://www.ssbbartgroup.com/blog> | Newsletter<http://eepurl.com/O5DP>

From: CAE-Vanderhe [mailto:gregg@raisingthefloor.org]
Sent: Thursday, January 15, 2015 6:05 PM
To: Mike Elledge
Cc: GLWAI Guidelines WG org
Subject: Re: Enabling Zoom on Mobile Devices

the width does not determine the enlargement.

with responsive design you can have a fixed width and be able to enlarge the content 300% or more.

Also, please note that the normal ZOOM feature in all browsers is sufficient to meet this requirement.   It is therefore virtually impossible today to not meet this SC unless you either

  1.  find some way to shrink your text to the same degree that someone zooms the browser  so that it doesn’t change size as you zoom’
  2.  you create content that can ONLY be viewed by a certain browser and that browser has no zoom.


The problems being cited in the other posts are assuming things that are not required by WCAG.


Gregg




On Jan 15, 2015, at 2:08 PM, Mike Elledge <melledge@yahoo.com<mailto:melledge@yahoo.com>> wrote:

Hi All--

Is it required under WCAG 2.0 AA that users can enlarge mobile sites to 200%? The question came up during our monthly accessibility forum, and I haven't been able to find anything about it online.

Apparently it is not uncommon for designers to set a fixed width for Responsive Web Designs, which, it seems to me, would be a violation of 1.4.4.

Your thoughts?

Mike