The appeal of mobile television is not so much that it is portable but that it is personal.
When asked why people watch mobile television in their homes, Japanese and South Korean media executives tend to make the same gesture.
Sport is also an important exception to the rule that mobile television does not make money.
Even before it catches on elsewhere, mobile television is failing in the two countries where it seemed most likely to succeed.
Either way, when beamed rather than streamed, mobile television is free.
That suggests that GPS satellite navigation, capacity for mobile television and storage space for hundreds of music tracks will also be standard features before long.
The country’s early start in mobile television owes as much to its sprawling suburbs as to its broadcasting acumen.
Better still, the biggest users of mobile television-18 to 34 year-olds-are the audience advertisers would kill for.
In South Korea a 15-second advertisement on mobile television costs less than one-tenth of what it would take to reach the same number of viewers on broadcast television.
Digital mobile television is a new type of broadcasting television media that emerged in recent years.
But mobile television in Japan is not all that mobile.