Tarjeta de Servicios Universalis

The  (lit. Universal Services Card), frequently abbreviated as TSU, is the standard in Ventora. It is mandatory for all nationals and recommended for foreign nationals with residence status in order to access healthcare and other social services. Upon birth registration, Ventoran nationals receive their unique Universal Services Number (: Número de Servicios Universales, NSU). Foreign nationals may apply for an NSU if approved for residence status, such as on a work visa. Used for identity purposes and to access all social services, the NSU is assigned by the Directorate General for Nationalities in the Interior Commission. The card may be renewed online or at any police station.

History
The TSU was introduced in 1915 to identify military veterans, particularly those who served during the First World War, in order to facilitate veteran services, such as housing assistance, medical care, and military pensions. In 1935, the TSU subsumed identification cards issued by the duchies in order to centrally manage military service obligations. Following the Second World War, the TSU became the means for all citizens to access healthcare and old age pensions beginning in 1947.

In 1965, the Commonweal Commission rationalized the various healthcare and social welfare schemes so the TSU serves as the single identification for accessing those services. Vehicle and vessel operating license information was added to the TSU in 1974. Such efficiencies now allow Ventorans to apply for a Ventoran passport using their NSU, providing minimal information, such as their current residence location, and paying the passport fee.

With the advent of technology, the TSU is now a that includes  information and can be used as an. In addition to accessing domestic benefits programs, the TSU may also be used in lieu of a passport for travel to Renesia.

Proof of identity
All persons on Ventoran territory (including Ventoran-flagged vessels and aircraft) must present proof of identity upon request of police or authorized government officials. Possession of a TSU is mandatory for all Ventoran nationals from birth and persons aged 15 and older must carry it outside of the residence.

Foreign nationals must carry their passport or a TSU while in Ventora. Nationals of Haksarad, Renesia, Tagaraš, and Watan may use their national identification card in lieu of a passport. Although there is no requirement for foreign nationals to obtain a TSU, those with residence authorization, such as holders of a work visa, must obtain a Universal Service Number for taxation and social services purposes. Thus, holding a TSU may expedite access to services.

Domestic uses
Beyond identification, the TSU serves a number of other purposes, including:
 * Operator license (vehicles, vessels, aircraft)
 * Voter authorization
 * National service status
 * Healthcare access
 * Pensions access
 * Social welfare programs access

With a and  (PIN), the TSU may be used for:
 * Electronic authentication of identity for online services via Sinapse, such as paying taxes, accessing personal or benefit information and records, etc.
 * Digital signatures (adults only)

International travel
Ventorans may use the TSU as a travel document in place of a passport when traveling to:

Description
Cards issued to Ventorans are blue-gray while cards issued to resident foreign nationals are light yellow. The cards are  and measure 85 x 55 mm.

Front
The header bears the great coat of arms of Ventora in color, the country name in dark red, and the official name (Reino y Mancomunidad de Ventora) in gray. The smart chip is also on the front, to the left, and the bearer's photograph is displayed in the lower right along with a ghost version in the lower left. Other elements on the front of the card include:
 * Surnames and given names
 * Sex
 * Height in meters
 * Date of birth
 * Universal service number
 * Expiry date
 * Signature

Back
A at the top of the back of the card is encoded with the data from the front along with the data from the  zone at the bottom. The magnetic stripe also contains information concerning any operator license(s) the bearer may hold.

The back also shows:
 * Current residence
 * National service, including service branch, rank, and current status
 * Vehicle, vessel, and aircraft operating licenses
 * Professional licenses

In the mid-section of the back, the bearer's right thumb print is on the left. A barcode in the center contains the encoded elements of the card. Another ghost version of the bearer's photography appears to the right of the barcode.

Security measures
Visible security features to the naked eye include optically variable inks, moving letters, and holograms. Ultraviolet security features and encryption for the smart chip, which includes digital certificates for authentication and (for adults) electronic signatures, as well as the barcode provide additional authenticity and security measures for the card, both physically and electronically. The barcode and chip include encrypted digital photographs and facsimiles of the holder's signature in addition to other validation data.

Universal Services Number
Assigned at birth for Ventorans and upon application for foreign nationals seeking residency, the Universal Services Number (Número de Servicios Universales , NSU) is twelve alpha-numeric characters in sets of four separated by dashes (–). It takes the form LLYY-MMDD-TSSC.
 * LL = Birthplace
 * 01-26 = duchies of Ventora
 * 27 = military dependents overseas
 * 28 = diplomatic dependents overseas
 * 29 = citizens overseas
 * 30-98 = foreign nationals (with permanent residency)
 * 99 = stateless persons
 * AA - ZZ = foreign nationals (with temporary residency)
 * YY = year of birth
 * MM = month of birth
 * DD = day of birth
 * T = type
 * 0 = female
 * 1 = male
 * 2 = state government
 * 3 = duchy government
 * 4 = municipal government
 * 5 = partnership
 * 6 = limited company
 * 7 = corporation
 * 8 = non-profit
 * 9 = limited non-profit
 * SS = sequence number for disambiguation
 * C = check digit

The check digit calculation uses the following algorithm. Digits 0 to 9 use their value and letters A to Z use values of 10 to 35. Multiply the value of each position by its weight. The weight of the first position is 7, of the second it is 3, and of the third it is 1, and after that the weights repeat 7, 3, 1, and so on. Add all the values together, divided the sum by 10, and the remainder represents the check digit.

Expiry
For Ventoran nationals, the TSU expires at age 7, age 14, and then every 5 years until age 30. The expiry is every 10 years from age 30 on.

For foreign nationals, the TSU expires with the expiry of the long-stay visa or authorized residence period. In this manner, the TSU is coordinated with visa and immigration schemes.

Cards must be renewed by their expiry date. They must also be kept current with mandated information, including residence.