EA developers that are working with the new peripheral claim that the new technology is so accurate, that it's over responsive at times.
Even though the Wii MotionPlus doesn't have an official release date, it won't stop publisher EA from releasing Grand Slam Tennis and Tiger Woods PGA Tour 10, which support the peripheral, in June.
In an interview with TechRadar, EA producers Thomas Singleton and Mike Taramykin explained how the Wii MotionPlus functions and all the different types of challenges EA had while developing two of the first titles that support Nintendo’s new peripheral.
According to Thomas Singleton, the producer of Grand Slam Tennis, "the game calibrates your hand motions, your WiiMote position, in relation to the sensors and after getting that calibration from the sensors, it's detecting where you are in relation from the shortest sensor point; up to down, left to right, then it maps those one-to-one movements to the character in the game." The biggest challenge that the Grand Slam development team had is that the Wii MotionPlus is too sensitive, so then team had to limit the fidelity of the peripheral to give the players "full total control."
Mike Taramykin, the producer of Tiger Woods PGA Tour 10, described the technology of the peripheral saying that "[it] incorporates a vibrating structure gyroscope," which "measures the vibrating structure's resistance to changes in orientation." Tarmykin said that "by accumulating these incremental changes, [they] can calculate a very good estimate of the Wii Remote's orientation."
When both producers were asked if it was challenging to incorporate Wii MotionPlus into each respective game, both producers said that it was easy. Nintendo provided software libraries to help the development team understand what the peripheral actually does. The only challenging steps were to figure how to utilize the peripheral and modify pre-existing game code to accommodate the new possible motions, and to modify the character animations to match those motions for a 1:1 experience.