Crucialtec provides optical modulation technology in business areas of optical communication sub-component and optical application units. The company offers Optical Joystick modem, mobile Internet devices, and WFM remote controls. It offers Optical Joystick technology that is used to support the graphic user interface in mobile devices, UMPC, PMP/various multimedia devices, digital cameras, PDA/MP3P/remote controllers, keyboards, notebook PC, and gamepads, which enable to navigate menus and contents using fingertips. It has strategic relationships with Intel, AMD, Yahoo, Google, T Mobile, AT&T, Symbian, and Microsoft. Crucialtec was founded in 2001 and is based in Chungnam, South Korea.