In examining the iPad and the iPhone, they found software that allowed a third party to secretly connect to an inbuilt global positioning system, essentially turning a device into a tracking device, said the second source. The technicians also found hidden, password-protected software that backed up the contents to a remote server, the source added.
http://www.huffingtonpost.com/2013/06/21/chen-guangcheng-spyware-row_n_3476188.html