SPOTLIGHT: Carriers seek next killer app

Smart phone sales are on the rise, leading many service providers to search for the next killer app. Long-time favorites like mobile TV are still on the shortlist, while contactless payments are another feature that some companies are pursuing, especially in Japan. IBM has announced plans to develop a one-button phone, which has tested well in trials. Phones that sync with local buses' GPS and estimate its time of arrival are also gaining traction. Article