U+A7BC Latin Capital Letter Glottal I

The Wikipedia has the following information about this codepoint:

As used for Egyptology, transliteration of Ancient Egyptian is the process of converting (or mapping) texts written as Egyptian language symbols to alphabetic symbols representing uniliteral hieroglyphs or their hieratic and demotic counterparts. This process facilitates the publication of texts where the inclusion of photographs or drawings of an actual Egyptian document is impractical.

Transliteration is not the same as transcription. Transliteration is the representation of written symbols in a consistent way in a different writing system, while transcription indicates the pronunciation of a text. For the case of Ancient Egyptian, precise details of the phonology are not known completely. Transcription systems for Ancient Egyptian do exist, but they rely on linguistic reconstruction (depending on evidence from the Coptic language and other details) and are thus theoretical in nature. Egyptologists rely on transliteration in scientific publications.