O2 had to resolve several issues with this type of marketing. When using an application. For example, someone using an iPhone or Android app typically also sees banner advertisements. AdLocal (now part of Yahoo! Japan) has the largest share of Japan’s location-based advertising market (valued at US$1b!), and such technology can make sure that the advertising that the user receives is based not necessarily on who they are but where they are. Advertisers create their own advertisements using a wizard and then specify the desired locations and dates to display them (for special promotions, discounts, etc.) It seems that the success of this type of intelligent marketing is likely to spread to the United States and Europe.