Pervasive Use of mobile wireless Devices There are 4 billion mobile phones Over 50 countries have mobile phone subscription penetration rates higher than that of the population (Informa 2007) *http://en.wikipediaorg/wiki/mobile_phone_penEtra tion rate The mobile device will be the primary connection tool to the Internet for most people n the world in 2020 PEW Internet and American Life Project, Dec 2008 2021-129 5Pervasive Use of Mobile Wireless Devices ß There are ~4 billion mobile phones Þ Over 50 countries have mobile phone subscription penetration rates higher than that of the population (Infoma 2007) Þ http://en.wikipedia.org/wiki/Mobile_phone_penetra tion_rate ß The mobile device will be the primary connection tool to the Internet for most people in the world in 2020. PEW Internet and American Life Project, Dec. 2008 2021-1-29 5