Web Applications for mobile devices

Hello experts,

I try to write some SAP Web Applications for Mobile Devices and they should be device-indepent if possible.

I'm thinking about the following ways(We have Web AS 6.30):

BSP: Develop my own BSP-Extensions which render different Layout by unsing client_info.

Use HTMLB for JAVA. How can I get the package com.sap.mobile.htmlb? (Excuse my beginner question 😉) Is there more information about how to use it?

Any comment, suggestion and information will be very appreciated

Regards

Vivian