This category lists languages which use the SignWriting script (or SignÉcriture, SignWriting in French), coded Sgnw or 095 in ISO 15924 since 2015-07-07, supported by Unicode since version 8.0 with the alias Signwriting (ref. : Ch21.7). See also wikipedia:en:ISO 15924:Sgnw.
You can render that script on your system with the following fonts (in order of coverage): 'Signwriting 2010', 'Signwriting 2010 Filling', sans-serif.
Note: This is a vertical writing script.