iPhone 4 Augmented Reality with Gyroscope

When it was announced the iPhone 4 would have a gyroscope, improving its motion detection accuracy, I immediately thought that would come in handy for augmented reality applications.

Well, here it is: Acrossair, an augmented reality browser running on an iPhone using the new gyroscope, side by side with a iPhone 3GS using only the digital compass and accelerometers.