I also would like to know, would be great for my restaurant. seen one person show that they connect from ipad on youtube but dont know how.
I can do that, its what my company does!
Here is one of our apps were launching worldwide next month www.smartgovapp.com
We currently have private apps for schools, hospitals, and clinics...
Apparently google provides tools to help port java applications to dalvik, which is what android apps are written in.
For developers, more info is here: http://developer.android.com/guide/basics/what-is-android.html