- From: Patrick H. Lauke <redux@splintered.co.uk>
- Date: Fri, 22 Jul 2016 09:43:09 +0100
- To: GLWAI Guidelines WG org <w3c-wai-gl@w3.org>
On 22/07/2016 05:00, Gregg Vanderheiden RTF wrote: > ????? > > this is about how to make a web page accessible. > > I’m not sure how a web author has any idea what hardware is at the other > end ofter than a screen, keyboard, and pointing device (which are pretty > much standard). And for these s/he can only design to the keyboard, > screen and pointer interface since they don’t have any ideas of the size > or form of the physical devices (though the screen size or at least > pixels might be known. There are many advanced APIs (both standardised and vendor-specific on particular platforms) that allow authors to hook into advanced sensors (for instance, camera) and high-level services (such as biometric authentication systems like TouchID, though this is currently only possible from native apps...but potentially, this could be exposed in future to the web platform as well, meaning a web app could provide a TouchID field for users to authenticate with their fingerprint - the OS itself would handle the actual authentication, and send a "valid"/"invalid" message back to the webpage requesting authentication). I could, in principle, see an argument for authors being required to provide alternatives. But this does feel like it could be a good example of a broader thought I have for an SC to cover "advanced sensors" in the mobile TF work, which (once I've drafted it) will say something along the lines of "as you can't rely on the presence of these sorts of advanced sensors (tilt sensor, light sensor, [and here we could add fingerprint sensor used for biometric authentication]), ensure that alternative accessible mechanisms are available for users to trigger functionality/control the web page". This is clearly still in need of lots of wordsmithing, but wondering if the general gist of this would adequately cover Katie's concern on biometrics (if adequately explained in the Understanding related to the SC)? P -- Patrick H. Lauke www.splintered.co.uk | https://github.com/patrickhlauke http://flickr.com/photos/redux/ | http://redux.deviantart.com twitter: @patrick_h_lauke | skype: patrick_h_lauke
Received on Friday, 22 July 2016 08:43:35 UTC