This is actually exactly what our company (assembly.com - YCS15) does. We're now at the stage where we provide effectively a full supply chain solution. It wor

This is actually exactly what our company (assembly.com - YCS15) does. We're now at the stage where we provide effectively a full supply chain solution. It works like this: 1. Product company has an issue like this and contacts us 2. We work with the factory, setup our quality control hardware+software. 3. The product company defines all of the procedures for validating that a product works and is legitimate. All of those are performed by our team on the China side. Individual units are serialized with QR codes and photographed and videoed during inspections. The combination of unique QR in our system and natural markings on products is usually enough to validate authenticity. We have a few other systems we use to further validate the product, but on a high level and as the most cost effective part of our solution, this already helps far more than doing nothing. We've helped prevent a large amount of fraud that was previously occurring for some customers. Interesting to see this start to become a larger issue on Amazon's side. 4. We're currently working on moving the serialization and validation to more steps in the supply chain, continuing to validate authenticity + quality closer and closer to the customer.