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<p>[QUOTE=&quot;Burton Strauss III, post: 2712054, member: 59677&quot;]The mobile app probably uses a different lookup (API) where the grade is optional (if you scan the barcode, it has the value). Or could be sending a security token that identifies the specific smartphone. They already limit the # of queries from a specific address within a period of time.</p><p><br /></p><p>All of these are designed to make it more difficult or slower to scrape (retrieve all the data from) the database, while still making it available to &#039;legit&#039; (however you want to define legit) users.[/QUOTE]</p><p><br /></p>

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