iPhone 4 Gyroscope/GPS versus Accelerometer/GPS/Compass
<p>I am about to use iPhone 4's gyroscope/GPS on a game, to detect rotation and translation. As far as I know, the gyroscope can be used to detect rotations in all 3 axis. </p>

<p>But rotations, at least on the horizontal plane can be detected with the compass, tilts can be detected with the accelerometer and positions with the GPS. </p>

<p>Can a combination of compass/accelerometer/GPS create the same level of detection of gyroscope/GPS?  (I am thinking of allowing this combination for people without iPhone 4).</p>

<p>Will this work perfectly?  </p>
