SID

(also known as the Solarian Identification System)

"SID, or the Solarian IDentification System, is an identification protocol established for a more streamlined experience in a person's identification when they travel. On SID documents, it lists the person's initials, birthdate, and location of registration. Other information may be listed on the card depending on the type, such as the triangular gender-sex marker."
---The Almanac of Humanity, penned by an Azalean travel agency

Purpose

The purpose of the SID system is to make an intuitive identification system for all Human individuals anywhere east of the Zelotian Wall. There were a ton of different, localized identification systems employed throughout Primaria at one point in time; after The Great War, it was Azalea's idea to try and standardize them all.

Document Structure

Clauses

Every legal person on the supercontinent holds an ID of sorts, determined by the person’s place of designation, name, and birthdate. For the purposes of this document section, we will be only outlining the coded ID itself, not the ID it’s located on. The rubric is as follows:

1. First Initial of Surname | If Multi-Word, First Two [example: Van Gogh = VG]

2. First Two Unique Letters of First Name | Senary System [example: Aaron = 0130]

Letters	None -- 00	A -- 01	B -- 02	C -- 03	D -- 04
E -- 05	F -- 10	G -- 11	H -- 12	I -- 13	J -- 14
K -- 15	L -- 20	M -- 21	N -- 22	O -- 23	P -- 24
Q -- 25	R -- 30	S -- 31	T -- 32	U -- 33	V -- 34
W -- 35	X -- 40	Y -- 41	Z -- 42	Apos -- 43	Hyphen -- 44

3. Three-Letter Area Code + District # | Link List Here [example: Zelos, District 5 = ZLS5]

4. YY-MM | Simplified Birthdate [example: born 13th month in 2027 = 2713]

5. Single-Digit Code | Duplicates get ascending numbers [example: no dupe = 0]

The final example ID would then be VG-0130-ZLS5-2713-0.

Solarian Postal Codes

The supercontinent is vast, thus the process of shipping postage as conveniently as possible is ultimately necessary. The postal codes are broken up into three sections: Country, State, City.

Gaia’s “countries” are more like continents, though without the natural separation that Earth continents usually have in some shape or form. Countries: Tethysia, Titania, Ecurria, Ceres, and Hebe.

The States are colloquially called “countries” by the masses; technically, they could be due to their size and varied governmental systems. State examples are Zelos, Azalea, New Saint Morgen, and Juniper Isle.

Cities are self-explanatory: a location within a country that has its own miniature government. For the purpose of postal codes, they are generally designated by metropolitan zones and not the place names themselves.

As an example: if a person lives in the country of Ecurria [05], in the state of Azalea [42], within the Rutherford Heights District [30], then the postal code will be 054230.

The Gender-Sex Marker

The ultimatum when it came to putting gender or sex on identification cards, the gender-sex marker is an upward-pointing triangle with a circle at its base. The triangle is horizontally striped with black (the same shade as the circle), and the triangle itself can be colored with a vast array of different shades.

As an interesting innovation of identification cards, the black stripes and circle are actually a part of the card, but the colored triangle is user-applied. This means that the user can constantly replace their colored triangle if they find their gender not aligning with themselves anymore.

	Standardized Gender Markers
Cyan: masculine [he/him]	Yellow: androgyne [they/them]	Magenta: feminine [she/her]
	Non-Standard Gender Markers
Green: agender [ask me]	Color-to-Color (no split): genderfluid	Purple: nonbinary [ask me]
Grey stripe: demigender	Black stripe: unconventional gender	White: name only [no pronouns]

The black circle isn't just a directional guide for the sticker, however: instead, it is coded with the designated sex of the card holder to such a degree that it only can be read via a specialized eyeglass. The sex mark is made with a proprietary UV-based ink, so the marker manages to remain obscured even under blacklight.

This is to allow an individual to only disclose their sex to people they trust, and medical professionals that require knowledge of an individual's sex for more accurate medical guidance. The sex marker can be altered, replaced, or outright removed by medical professionals if it is deemed necessary, as well.

References

SID is referenced in any and all existing civilian documentation, including Passports, Driver's Licenses, Medical Licenses, and standard Identification Cards. It holds so much convenience, that even some websites utilize SID for their users, such as Palaver®.

Legal status

SIDs are a valid form of identification in every single human civilization that has socio-economical connections to the landmass. This includes the Moerian Archipelago and Ooshima. Outside of these human lands-- most notably Eris, known as the Forgotten Land-- it holds no jurisdiction, and can be seen as confusing.