Accessories can be connected to a Wii Remote through a proprietary port at the base of the controller , such as the bundled Nunchuk — a handheld unit with an accelerometer , analog stick , and two trigger buttons.An expansion accessory known as Wii MotionPlus augments the Wii Remote 's existing sensors with gyroscopes to allow for finer motion detection ; the MotionPlus functionality was later incorporated into a revision of the controller known as Wii Remote Plus . At E3 2009 , Nintendo also presented a " Vitality Sensor " accessory that could be used to measure a player 's pulse . In a 2013 Q&A , Satoru Iwata revealed that the Vitality Sensor had been shelved , as internal testing found that the device did not work with all users , and its use cases were too narrow
E3 2009
E3 2009
Wii