Which major publishing innovation in the 1980s-90s revolutionized book cover design and retail display by creating consistent visual branding across an author's works?

Book cover design is a fascinating intersection of art and marketing. In the publishing industry, covers serve as crucial product packaging that can make or break sales. This poll explores a significant shift in book cover design strategy that revolutionized how publishers approached their visual branding in the late 20th century.

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Author-branded cover design systems (consistent typography, color schemes and visual elements across all books by the same author)
Holographic cover technology that changed images when viewed from different angles
The introduction of QR codes linking to author interviews and bonus content
Clear plastic dust jacket overlays that revealed hidden artwork beneath