To get fancy you could compare against the millions of known frauds and apply that to new products.
The thing that bugs me is that they do nothing. This stupid “it’s all on you to register your brand and yadda yadda” would be cool if they also coupled that with a ton of effort and smarts to stamp out counterfeiters.
I mean they run mechanical Turk, they could just manually review shit.
They should keep a running log of how they think this is important and all the things they try.
There’s no machine learning to do. The only way to find the counterfeit is to inspect each shipment by hand vs a reference sample to determine if it’s legit.
This is basically what the Amazon transparency program is. Is tracks each item from manufacturer all the way through to your door with unique code scanned along the way. You can use the app to see where it came from.
My point is that they aren’t doing anything. You point out a couple of edge conditions as a reason not to try. Even reducing fakes by 20% would be great.
If this cost Amazon money they would be trying to stop it.