In this thesis we present a software development kit (SDK) which helps developers easily create applications that feature screen sharing. There is closer interaction between these devices by using our SDK. Our SDK supports different multi-touch mobile devices, resolutions, and platforms. It synchronizes the devices via wireless network communication. We identify the requirements of stitching and describe our flexible system architecture. We introduce there scenarios using the technology to expect it is largely applied in our daily life to offers interest and convenience. Finally, we return to our SDK and discuss an issue that the visibility of multiple overlapped objects after stitching.