Kercan Bluetooth Barcode Scanner, 1D Portable Wireless Laser Line Code Reader for POS/Android/iOS/iMac/Ipad/Windows with Bluetooth 4.0 Receiver

I would like to know how this works? I have tried everything possible to get it to scan!!! I have even had a mechanical engineer and a computer engineer try to get it to work.......still trying to get it scan..Highly disappointed and never did get to use it for the purpose it was purchased for.