Natural feature tracking is a very complex problem that requires high computational power [11] which has limited its functionality on mobile platforms in the past. With the introduction of dual-core processors in mobile phones however, the capability of implementing natural tracking technologies has become more available, and it has also been shown that natural feature tracking can be
achieved on the iPhone 3G, a device lacking the dual-core processing power of
newer devices, using SLAM (Simultaneous Location And Mapping) technology
SLAM has also been successfully implemented in the Apple iPad2 app Ball
Invasion by developer 13th Lab. The developer has stated that it aims to release
a development kit for its technology, making it the first commercial SDK for
natural feature tracking on iOS