Get "Invalid ISBN" OR "Not Found" when scanning  

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1. For books, please make sure you scan ONLY the ISBN barcode, and NOT UPC barcode. For some pocket sized books , the ISBN barcode is on the first page, not at the back of the book.

2. While we have very good coverage of ISBN for books in the market , our database does not contain every single ISBN in the market. We believe our coverage is close to 99% for books


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Last modified: 12/24/08.