When people talk about barcode scanner, I will start angry with one previous recommended supplier that sold barcode scanner to my friend. This supplier is my friend, and the buyer also my friend, it is because of barcode scanner malfunction after one week he bought, then the buyer come to look for me and ask me to talk with my other friend for compensation, he suppose to deal and call him to talk, not come to look for my help. I promised myself, I will not going to do this type of thing in future, waste my time and work and I also didn’t get any cent from them too.