The first Castlevania game for the DS [1] had a system where you used the touch screen (with a stylus) to draw "runes" (simple patterns like a triangle or squar

The first Castlevania game for the DS [1] had a system where you used the touch screen (with a stylus) to draw "runes" (simple patterns like a triangle or square) to either a) defeat bosses or b) unlock doors. This might seem a bit cute, but it covers the basic idea to me. The game was released in 2005 and I believe Apple's first patent on slide-to-unlock was filed in 2009. 1 http://en.wikipedia.org/wiki/Castlevania:_Dawn_of_Sorrow http://en.wikipedia.org/wiki/Castlevania:_Dawn_of_Sorrow