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The article says each SKU gets its own codes (and my understanding is that Amazon maintains SKU metadata internally and all resellers sell against it). My guess
by sudhirj 7y ago
The article says each SKU gets its own codes (and my understanding is that Amazon maintains SKU metadata internally and all resellers sell against it). My guess would be a variation of skuUUID:itemUUID:sha1(skuUUID+itemUUID+skuSecret), encoded as a QR code. UUID could be a smaller int ID, hash could be a base64 encode if you need to save space.