Here are a couple of presentations I've been making a lot lately - about our work to expose platform/device capabilities to web developers.
After you look at the technology, think about the kinds of device capabilities, hardware and software, that would make your web application better. Then share them with us - we're listening.
If you need some food for thought take a look at this blog post - where I list several API drafts we recently submitted to the W3C Device API working group.
"The story"....

