NTT DoCoMo is organising a competition for scenario construction about the impact of mobile technology in the future city:

Few tools have become as widely accepted in everyday life in recent years as cell phones. Keitai (“portable”), the shortened term for a cell phone, has come to mean much more than a portable communication terminal; the keitai has become an indispensable tool for constructing the infrastructure of everyday life; the term has taken on a greatly expanded significance to mean new lifestyle media. How is the city, our immediate environment, developing under these circumstances? In times of great change, the city, in keeping with, or in critical reaction to, that change, has also undergone changes of guise or structure. What sorts of conditions will the city generate in the future, as the keitai becomes an integral part of our lifestyle?