I think, and is just my opinion, in order to AUTO VIN work good they have to input all the VIN in the tool.
I think this is a little software that can decode the VIN and guide you to the correct label. And in order to do that it has to have all the VIn.
But I think this could work better if the auto code vin, could connect to a server were as all the information about VIN and in that way it can decode more accuracy.