Thread: [GUI Plugin] Copy book covers as Standby images (Sony/Kindle/Nook)
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Old 05-12-2011, 03:21 PM   #47
kovidgoyal
creator of calibre
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every book in calibre is assigned a unique uuid (the only way these can be duplicated is if the user does something unusual like manually creating duplicate libraries). It should be unique enough for your purposes.
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