Frame with An X was discussed as a pictographic symbol concept in the same broad era as many 2014 Unicode and emoji-candidate additions, when legacy symbol-font icons, interface signs, and web-style pictographs were being reviewed for possible emoji-style use. The idea was not adopted as a widely supported, officially recommended emoji on major platforms, and it is best understood as a proposed or marginal Unicode-style symbol rather than a familiar emoji character. Its intended meaning would likely have centered on a missing picture, broken image, rejected item, closed frame, deletion, cancellation, or a placeholder where visual content failed to load. People may have wanted it because the red-X or crossed-box image was a common internet experience, especially on older websites, email clients, and forums where images did not display correctly.
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Emoji History The emoji code/ image log of changes.
This emoji was one of the "suggested emojis" the Unicode group unveiled in June 2014 [article], however, it has been, and still is, up to the companies who support emoji in their operating systems to provide not only images but also an algorithm to replace the emoji code into the emoji image.