- From: Patrick H. Lauke <redux@splintered.co.uk>
- Date: Mon, 24 Aug 2020 00:30:48 +0100
- To: public-mobile-a11y-tf@w3.org
On 23/08/2020 22:30, Sukriti Chadha wrote: > There is a note in the SC that mentions increasing the hit-area of > smaller targets, which the group might want to consider. My proposal > would be at least 40X40 density independent pixels for mobile/ css > pixels for web or 7 mmX7mm for level AA. Below are the mobile guidelines > from Android, iOS, Microsoft and BBC that informed this number. > > Google (48X48 dp) : > https://developer.android.com/guide/topics/ui/accessibility/apps#large-controls > > > Apple (44X44 pt): > https://developer.apple.com/design/human-interface-guidelines/ios/visual-design/adaptivity-and-layout/ > Microsoft (40X40 epx) : > https://docs.microsoft.com/en-us/windows/uwp/design/input/guidelines-for-targeting#target-size > BBC (7mmX7mm) : > https://www.bbc.co.uk/guidelines/futuremedia/accessibility/mobile/design/touch-target-size > > Please let me know if I missed anything, and next steps I can help with > to resolve these issues. Thank you! Success Criterion 2.5.5 Target Size https://www.w3.org/TR/WCAG21/#target-size already covers this. SC 2.5.8 tries to ensure that there are at least no other interactive/actionable targets in that space. Also note that the BBC guidelines are inadequate as a reference, since they still use millimetres (as measured on screen) and can't be guaranteed by authors (as it depends on physical screen size, resolution, and the device's specific mapping of density independent units - e.g. CSS pixels - to this). SC 2.5.8's understanding document could do with cross-referencing SC 2.5.5 though. P -- Patrick H. Lauke https://www.splintered.co.uk/ | https://github.com/patrickhlauke https://flickr.com/photos/redux/ | https://www.deviantart.com/redux twitter: @patrick_h_lauke | skype: patrick_h_lauke
Received on Sunday, 23 August 2020 23:31:06 UTC