The accelerometer interprets the joy stick so targeting is as fast, as it would be with a joystick and about the same effort.

ENGADGET: Delta Six controller gets redesigned, Kickstarted

With a virtual 6 x 9 inch color VGA display, a small joy stick and mouse buttons operable by the index finger when using the phone during a conversation the StarTac phone provided the ability to viewed shared subject matter, photos or documents while talking, 15 years ago.

FORBES: The Cyber Display Telephone