Bachelor of Science, Dankook University, Seoul, 1997. Master of Science, Sungkyunkwan University, Seoul, 2001. Doctor of Philosophy, Sungkyunkwan University, Suwon, 2005.
Computer engineer KIA Information Systems, Seoul, 1996—1997. Computer engineer, programmer Seoul Theological University, Bucheon, 1997—2001. Senior researcher Spacesensing, Sungnam, 2003—2004.
Postdoctoral Authentication Technology Research Center, 2005—2005. Professor Seoil College, since 2006. Part-time lecturer Sungkyunkwan University, 2003.
Adjunct professor Myongji College, Seoul, 2004—2005. Referee journal Computer Communications. Sergeant Artillery, 1992-1994.
Married Hyun-Ju Lee, May 23, 1998. Children: Se-Min, Jung-Min.