The LLP technique appears to have been first introduced by Microsoft in a project called LaserTouch and subsequently by NUIGroup community member "AlexP" in May of 2008 存档副本. [2011-07-18]. (原始内容存档于2010-06-05).
The LLP technique appears to have been first introduced by Microsoft in a project called LaserTouch and subsequently by NUIGroup community member "AlexP" in May of 2008 存档副本. [2011-07-18]. (原始内容存档于2010-06-05).