Founded in 2004, China Digital TV is China's leading provider of conditional access (CA) systems, which prevent unauthorized access to subscriber content across the country's digital cable, satellite, terrestrial, IPTV and mobile television networks. China Digital TV has provided CA systems to more than 300 digital television network operators across mainland China. The Company is also a leading provider of value-added services to China's rapidly expanding digital TV market. As of March 31, 2014, China Digital TV had installed CA systems at more than 300 digital television network operators across mainland China and shipped approximately 102.1 million CA smart cards. According to third party data, China Digital TV captured around 52% of the market share in terms of smart card shipment in China in 2013.