Discovered something quite weird from the Camera of the E71 whilst I was playing around with it taking pictures of my laptop that I wanted to sell.
The weird part of it is, during the live preview from the camera (regardless video or still pics), the camera can sense and see Infrared light being emitted from my Laptop's IR (comes up as a red light blinking). I thought it was a glitch and tried other sources of infrared like a remote or another phone and it does see what the normal human eye cannot.
Haven't tried it on proper IR beams in security systems yet.. but just an interesting (or useless) fact that I bumped across and wanted to share..