Barcode scanner function on the N82

My nephew played with my N82 yesterday when he was over. He asked me how to use the barcode scanner function that came with it. I told him i dont know as all i saw on the screen is something going from left to right, right to left, left to right, continuously. It doesnt seem to be able to read nor capture anything. I told him not to compare it to the ls2208 his Dad uses at the shop. All i can say is that the barcode scanner function on the N82 is useless, lol.