During the World Summit on the Information Society (WSIS) held in Tunis from 16 to 18 November 2005 under the aegis of the United Nations, the International Telecommunication Union (ITU) disclosed that Korea came out on top among the 40 economies surveyed for the "Digital Opportunity Index (DOI)." The index, which measures countries' adoption and access to information and communication technologies (ICTs), was developed with an aim to utilize it as a gauge in bridging the digital divide and promoting the broad development goals included in the United Nations Millennium Declaration through increased access and use of ICTs. The DOI is the first e-index based on internationally agreed ICT indicators. It groups eleven ICT indicators, such as the percentage of population covered by cellular telephony, into the three categories of "Opportunity," "Infrastructure," and "Utilization." Known to be a more sophisticated index than the Digital Access Index (DAI), DOI, as a composite index, allows the tracking and comparison of countries in different aspects of the Information Society. It measures countries' ICT infrastructure, access path and device, affordability and coverage, and quality. As regards the DOI rankings, Korea scored the top with 0.76 points while Hong Kong and Japan scored 0.67 and 0.66 points respectively, taking the second and third places followed by Denmark, Sweden and Canada. In the case of the ratios of broadband Internet subscribers to both the fixed and mobile Internet subscribers, in particular, Korea showed conspicuous results. All the fixed Internet subscribers in Korea are connected to the broadband Internet whereas only 52.6% of fixed Internet subscribers in Hong Kong, and 40.6% in Japan, were shown to be using the broadband network. Moreover, Korea showed 22.39% in the ratio of broadband Internet subscribers to the mobile Internet users, higher than those of the UK and Japan with 7.54% and 2.93%, respectively. A government official at the Ministry of Communication and Information said that what this shows is the possibility of Korea making the fastest progress in the 'ubiquitous society.' In the meantime, ITU has said that it plans to continuously expand the number of countries surveyed in its future studies.