The best way to implement it is hiring a developer, or learning how to do it.
This link
http://developer.android.com
will give you an idea of what to do, and how to do it. The link is for android systems.
The other option could be create 2 websites, one will be the regular for computers, and the other one will be for mobiles. But you will need some code to detect what kind of equipment is using whoever is trying to see your website to redirect him in one direction, or the other one.
Check
TitleMobile Joomla
It's a Joomla Extension that do the trick suggested above.
But definitely, It could be nice to have a mobile version of hotspots to use together with the above extension.