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RE: [Clarification] "Single key means single physical key"

From: Jon Gunderson <jongund@uiuc.edu>
Date: Mon, 12 Mar 2001 19:36:19 -0600
Message-Id: <>
To: "Denis Anson" <danson@miseri.edu>, "'Ian Jacobs'" <ij@w3.org>, <w3c-wai-ua@w3.org>
I think there are two parts here:

1. Is that we mean single key activation for a certain set of 
functionalities in Checkpoint 11.3 (9 March draft).

2. We require using the standard input APIs, so ATs could emulate the 
keypress and the User Agent would not know it came from an AT (Checkpoint 
6.7, 9 March draft).

I think Ian just wants to make 1 clearer, especially in the case of foreign 
languages which may have quite complex keyboards.


At 01:58 PM 3/12/2001 -0500, Denis Anson wrote:
>I think I'll have to disagree here.  This would (could) lead a person to
>directly address the physical keyboard, which is a design that would
>bypass the AT that might be installed.  If the UA is receiving input
>from the OS in the recommended way, it can't tell if the keystroke came
>from the physical keyboard, or from a Morse Code input system that is
>connected via a PCM/CIA or Serial port.  Single key means single
>discrete action, as opposed to a long series of actions to activate the
>Denis Anson, MS, OTR/L
>Assistant Professor
>College Misericordia
>301 Lake St.
>Dallas, PA 18612
>-----Original Message-----
>From: w3c-wai-ua-request@w3.org [mailto:w3c-wai-ua-request@w3.org] On
>Behalf Of Ian Jacobs
>Sent: Monday, March 12, 2001 11:58 AM
>To: w3c-wai-ua@w3.org
>Subject: [Clarification] "Single key means single physical key"
>In the 9 March 2001 UAAG 1.0 [1], we refer to "single key" bindings in
>checkpoint 11.3 (we also refer to "modifier keys"). I think we need to
>clarify that this refers to actual physical keys on a keyboard, not
>signals sent by the hardware. The accessibility requirement involves
>limited physical movement.
>I would also note that I do not believe that there are any
>internationalization issues here. On systems where a user must use
>several keystrokes to compose a single (abstract) character, we still
>want single-physical-key access for users.
>Therefore I propose clarifying in checkpoint 11.3 that when
>we talk about "keys" we are referring to physical keys.
>  - Ian
>[1] http://www.w3.org/WAI/UA/WD-UAAG10-20010309/
>Ian Jacobs (jacobs@w3.org)   http://www.w3.org/People/Jacobs
>Tel:                         +1 831 457-2842
>Cell:                        +1 917 450-8783

Jon Gunderson, Ph.D., ATP
Coordinator of Assistive Communication and Information Technology
Division of Rehabilitation - Education Services
College of Applied Life Studies
University of Illinois at Urbana/Champaign
1207 S. Oak Street, Champaign, IL  61820

Voice: (217) 244-5870
Fax: (217) 333-0248

E-mail: jongund@uiuc.edu

WWW: http://www.staff.uiuc.edu/~jongund
WWW: http://www.w3.org/wai/ua
Received on Monday, 12 March 2001 20:33:51 UTC

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