I have deployed Android apps that are currently available for download on Google Play,Opera Mobile store and Samsung Apps. I built the hybrid apps by using intel XDK. It is truly cross-platform and has a lot of libraries like Cordova,LefletJS,jQuery etc. The platform also allows you to bring any external javascript library and embedded it in your app. Did I forget to inform you that it's also open-source! Links to my apps http://bit.ly/conback http://bit.ly/ibarcodereader

Unless we have an interfacing platform to check what hardware/OS exists on the device, it's not possible. A pure HTML5 web App cannot access these. TinyDevicesTalk!

<< means bitshift left >> is bitshift right ^ is XOR. and a <operator>= b is the same as: a = a <operator> b