Why not implement an universal identification system with the bags. Have a hologrammed card come with each new item with a serial number on it which you could type in online and verify the authenticity of the item, it could show the manufacture date, manufacture plant name, store of purchase, model number, and original owner. That way fakes would be obsolete.
Better yet they could implant RFID tags into each item such that all that would be needed was a scan to get all relevent information and verify the authenticity.
Better yet they could implant RFID tags into each item such that all that would be needed was a scan to get all relevent information and verify the authenticity.