Wireless I'm sure you all know NTT's iMode system. The Japanese people love it. When I travel to the states or other parts of the world, I feel that Japan is far ahead in this area. The iMode system does have competition, but they command a small market. Next year, iMode will allow users to tap into Java, so ASPs can start to provide even more services.
People are very mobile here.
They tend to be a trendy society. Lifestyle and country layout. If you have ever been Japan, you will know that there are no street names. Streets have numerous small bars, restaurants and other types of businesses. So location finding services are becoming a big hit.