- From: Mounir Lamouri <mounir@lamouri.fr>
- Date: Mon, 09 Dec 2013 00:43:57 +1100
- To: Marcos Caceres <w3c@marcosc.com>, Doug Turner <doug.turner@gmail.com>
- Cc: Josh Soref <jsoref@blackberry.com>, "Kostiainen, Anssi" <anssi.kostiainen@intel.com>, "<public-device-apis@w3.org>" <public-device-apis@w3.org>
On Mon, Dec 9, 2013, at 0:21, Marcos Caceres wrote: > From the data we collected, the main cases appear to be: > > * warn the user that this could cost them money (bbc website, only works > on Safari in iOS) > * give the user control as to whether large uploads/downloads should > happen over cellular. > * Prevent accident data transfer over cellular, which could use up of the > user's download quota and/or cost them money. As I see it, UC does not mean "what people do" but "what people could do if they have that tool". For the moment, it is fairly hard to guess the connection quality of your users so websites/apps will use the best tool they have: cellular vs wifi. But as said multiple times, there is fast and uncapped cellular and slow and capped wifi. Why the iTunes store prevent users to do large downloads over their cellular connections? Likely because users might end up paying without knowing it and complain to Apple and also because the download might be so slow that it could affect the user experience. I see UC for bandwidth. Basically, anything related to content quality negotiation: - default image quality: you visit Google+, Facebook or Flickr and depending on your device, you will see an image that will be fast enough to be downloaded (yes, this is intended to be solved by responsive images too); - default video quality: Netflix currently shows a low quality video and improve it until they reach a quality that match what the user can download. It would be better for the user perspective if the first video quality was closer to what they would expect; - default texture in a game: a game might want to show LD quality because your system can't handle HD quality but also because downloading the assets would be too slow; - downloading the email bodies without monopolizing the bandwidth. For what its worth, we are having this discussion every 6 months. Some UC are listed in the specification I believe and could definitely be found in the list archives. Cheers, -- Mounir
Received on Sunday, 8 December 2013 13:44:19 UTC