Reader Alex Bratton over at Lextech let us know about a fun iPhone project they're working on. Most high-end surveillance systems use a joystick or mouse to control those cameras that we see all over the place. Lextech has done some work using the touchscreen of the iPhone to replace the old 70's UI tech.
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.