Thread: When did Kobo's store starting using "Book ID" instead of ISBN?
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Old 06-29-2025, 05:57 PM   #10
salamanderjuice
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Quote:
Originally Posted by Quoth View Post
In a physical shop for a physical book. Hence titles using KDP have an ASIN but may not have an ISBN.

Oddly an ISBN is totally optional for an ebook, which is why the major stores with direct SP have their own ID system, because in most countries the ISBNs have to be paid for. An Amazon Kindle ASIN or a Kobo eBook ID is free.

Actual publishers, or people Self Publishing everywhere will use real ISBNs. Unless an ebook is only in one store and ISBN is the best solution.
They exist for more than physical shops! That's why ebooks get assigned unique ISBNs, to get identified differently from the paper version. They are useful for libraries, creating citations, anywhere a unique book ID is useful.

ISBNs are not required for self published paper books either.
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