To pan the surveillance camera, you scroll the screen left or right using the traditional iPhone finger drag; tilt is done by dragging a finger up and down. Want to zoom in for details on the bad guys? Use the iPhone "reverse pinch" gesture to get the close-up. And if you want to zoom back out to get the big picture, it's a simple pinch on the iPhone display.
Videos demonstrating the control system are on the Lextech site and on YouTube.