Now that there is a front camera on the iPhone 4, will it be used in games for example: like the Xbox 360 Vision Camera where there is games you can use your finger just to pop bubbles, and what about creating a player in a game with face detection to make the game character look like you.
I hope so, rainbow 6: vegas used that face thing you said to make ayour person look like you. Another use could be like in C&C:TW on the xbox is when you win it takes a victory snapshot of you doing a Gene Simmons impersonation all the while flipping off the people who lost.
