The ICT Development Index (IDI) is a composite index combining 11 indicators into one benchmark measure that serves to monitor and compare developments in information and communication technology (ICT) across countries.
The Republic of Korea tops the IDI in 2011, as it did in 2010. The country ranks first in the use and skills sub-indices, and is the only country that exceeds the eight-point mark in the use sub-index. Both mobile-broadband and fixed (wired)-broadband penetration rates are very high, and 84 per cent of the population is online. The Republic of Korea excels on all three indicators used to calculate the skills sub-index, underlining the importance of education and literacy in bringing people online. Finally, it has the highest percentage of households with Internet access worldwide (97 per cent), with virtually all households connected to the Internet. The country has made ICT development a policy priority and integrated its use in many aspects of society.
2012 edition of Measuring the Information Society
http://www.itu.int/ITU-D/ict/publications/idi/material/2012/MIS2012_without_Annex_4.pdf
New information and communication technologies (ICTs) continue to penetrate countries in all regions of the world, as more and more people are getting connected.
Chapter 2. The ICT Development Index (IDI)