The CamMe app from Israel’s PointGrab allows you to control your smartphone camera from a distance of up to 22 feet. Just raise your hand and make a fist. The app will then start counting down and take your “selfie” photo.
http://www.pointgrab.com/1954/camme-selfie-app-a-cool-way-to-take-group-photos-and-actually-be-in-them-too/